a(n) = Sum_{k=0..n} binomial(n,k)^(2*k+1).

A206158

a(n) = Sum_{k=0..n} binomial(n,k)^(2*k+1).

Terms

    a(0) =1a(1) =2a(2) =10a(3) =272a(4) =24226a(5) =12053252a(6) =40086916024

External references