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Problems

1 – 50 of 209
Problem Title
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Solvers
Difficulty

Problem 60286. Hofstadter Q sequence

Created by: minnolina

Tags sequence, hofstadter

1

19

Problem 48005. number play

Created by: KATTA PRATYUSHA

Tags numbers, sequence

1

43

Problem 44225. Sum of self power series

Created by: MathReallyWorks

Tags sequences, series, sum

2

76

Problem 42715. Throw common elements of two vector arrays in sorted manner

Created by: Azhar

Tags vectors, sorting, arrays

0

69

Problem 42835. Return the sequence element II

Created by: HH

Tags numbers, sequence, juggler

1

42

Problem 54675. Define an arithmetic sequence

Created by: Ashley Barnes

Tags sequences, sequence, arithmetic sequence

1

26

Problem 42833. Return the sequence element I

Created by: HH

Tags numbers, sequence

0

40

Problem 1655. Sum of first n positive integers

Created by: MKN

Tags sum, sequence

3

603

Problem 3010. Self-similarity 1 - Every other term

Created by: goc3

Tags integer, sequence, self

1

62

Problem 43684. 0, 2, 0, -2, 0, 2, 0, -2, ...

Created by: Peng Liu

Tags sequence, periodic

0

79

Problem 44818. Add consecutive integer numbers

Created by: Gareth

Tags sum, sequence

0

56

Problem 3011. Self-similarity 2 - Every third term

Created by: goc3

Tags integer, sequence, self

0

58

Problem 60306. Add non-triangular numbers

Created by: ChrisR

Tags sum, algebra, sequence

0

13

Problem 54770. Count the peaceful queens

Created by: ChrisR

Tags chess, sequence, oblong

2

67

Problem 60271. Hofstadter G sequence

Created by: minnolina

Tags sequence, hofstadter

0

12

Problem 48030. Find the Pattern 3

Created by: Doddy Kastanya

Tags logic, sequence, pattern

3

217

Problem 48020. Find the Pattern 1

Created by: Doddy Kastanya

Tags logic, sequence, pattern

4

252

Problem 59791. Complete a geometric sequence

Created by: ChrisR

Tags sort, sequence

1

9

Problem 56240. List numbers that are not squares

Created by: ChrisR

Tags sequence, annoying bans, you know where to look

1

19

Problem 47255. Find Logic 8

Created by: Dev Gupta

Tags logic, cody, contest

4

393

Problem 48065. Find the Pattern 10

Created by: Doddy Kastanya

Tags logic, sequence, pattern

2

221

Problem 60266. Stern-Brocot Sequence

Created by: minnolina

Tags sequence, stern, brocot

0

8

Problem 45254. Tribonacci Sequence

Created by: Asif Newaz

Tags easy, number, sequence

1

45

Problem 60281. Hofstadter Female and Male sequences

Created by: minnolina

Tags sequence, hofstadter

0

7

Problem 44543. Normie Function

Created by: Naimul Hassan

Tags recursion, function, sequence

2

28

Problem 57869. Identify de Polignac numbers

Created by: ChrisR

Tags primes, number theory, sequence

2

19

Problem 47265. Find Logic 10

Created by: Dev Gupta

Tags logic, cody, contest

4

354

Problem 47310. Find Logic 15

Created by: Dev Gupta

Tags logic, cody, contest

3

379

Problem 45224. Wythoff Sequence

Created by: Asif Newaz

Tags number theory, sequence, oeis

2

29

Problem 44544. Normie Function (2)

Created by: Naimul Hassan

Tags function, sequence, matrix exponential

3

24

Problem 47239. Find Logic 5

Created by: Dev Gupta

Tags logic, series, cody

0

63

Problem 50953. Round up to π

Created by: ChrisR

Tags pi, sequence

3

22

Problem 51820. Count unique orderings of vertices of a polygon

Created by: ChrisR

Tags combinatorics, permutations, sequence

1

19

Problem 60276. Hofstadter H sequence

Created by: minnolina

Tags sequence, hofstadter

0

9

Problem 47295. Find Logic 13

Created by: Dev Gupta

Tags logic, cody, contest

5

344

Problem 50913. Compute the nth term from the golden sieve

Created by: ChrisR

Tags sequence, sieve

1

17

Problem 51274. Solve a nonlinear difference equation

Created by: ChrisR

Tags sequence, recurrence, difference equation

1

21

Problem 45253. Pell numbers

Created by: Asif Newaz

Tags number, sequence, pell

2

71

Problem 47370. Find Logic 25

Created by: Dev Gupta

Tags logic, cody, logical

0

209

Problem 45384. Sum! Sum! Sum!

Created by: Asif Newaz

Tags series, sum, sequence

2

38

Problem 47345. Find Logic 20

Created by: Dev Gupta

Tags logic, cody, contest

3

323

Problem 42647. Recursion - Fun

Created by: Manish Joshi

Tags easy, matrix, recursion

0

43

Problem 42836. Juggler sequence revisited

Created by: HH

Tags numbers, sequence, juggler

2

27

Problem 47240. Find Logic 6

Created by: Dev Gupta

Tags logic, cody, contest

3

354

Problem 51002. Deduce the pattern behind the sequence

Created by: ChrisR

Tags sequence

4

24

Problem 45231. Generate Golomb's sequence

Created by: Asif Newaz

Tags sequence, oeis, golomb

1

16

Problem 60561. Determine whether a number is a Blum integer

Created by: ChrisR

Tags primes, number theory, sequence

0

7

Problem 48025. Find the Pattern 2

Created by: Doddy Kastanya

Tags sequence, pattern

3

205

Problem 2982. Get a Fibonacci number's index.

Created by: Jared Metzel

Tags fibonacci, index, sequence

3

46

Problem 52824. Easy Sequences 31: N-N's Sequence

Created by: Ramon Villamangca

Tags easy, simple, sequence

1

12
1 – 50 of 209