a(1) = 0
a(2) = 1
a(2*N) = sqrt(a(2*N-1)*a(2*N+1))
a(2*N+1) = (a(2*N)+a(2*N+2))/2
given n return a(n)
The two recursion equations are mixed up.
radius of a spherical planet
give nth decimal place of pi
Back to basics 22 - Rotate a matrix
Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)
Cut an orange
Open coded lock.
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