76626

Appears in sequences

• Pseudoperfect (or semiperfect) numbers k having more than one set of contiguous proper divisors whose sum equals k.at n=4A335742
• a(n) = Sum_{k=0..floor(n/2)} binomial(n-1-k,k) * binomial(2*n-4*k,n-2*k).at n=9A360290
• G.f. A(x) satisfies A(x) = 1/( 1 - 9*x*(1 + x)*A(x) )^(1/3).at n=5A372087