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.
Word Counting and Indexing
Return elements unique to either input
Find a subset that divides the vector into equal halves
Add two numbers
Don't Try, give up and return NaN.
Optimum Egyptian Fractions
Polite numbers. N-th polite number.
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