Problems

1 – 10 of 10

Problem Title Likes Solvers

Pernicious Anniversary Problem

Created by: Jan Orwat

Tags oeis, sequences, cody5

637

Pentagonal Numbers

Created by: goc3

Tags five, pentagon, pentagonal

458

Evil Number

Created by: Jan Orwat

Tags pop series, number theory, easy

160

N-th Odious

Created by: Jan Orwat

Tags pop series, number theory, oeis

101

Polite numbers. Politeness.

Created by: Jan Orwat

Tags number theory, oeis

1 – 10 of 10

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Problem Groups

Problems

Pernicious Anniversary Problem

Pentagonal Numbers

Evil Number

N-th Odious

Polite numbers. Politeness.

P-smooth numbers

house of cards

Graceful Graph: Wichmann Rulers

Graceful Double Wheel Graph

Minimum Set (A+A)U(A*A) OEIS A263996

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