a(n) = Sum_{k=0..n-1} 8^k*B(k)*binomial(n,k) where B(k) is the k-th Bernoulli number.

A083012

a(n) = Sum_{k=0..n-1} 8^k*B(k)*binomial(n,k) where B(k) is the k-th Bernoulli number.

Terms

    a(0) =0a(1) =1a(2) =-7a(3) =21a(4) =49a(5) =-595a(6) =-1911a(7) =39109a(8) =165473a(9) =-4525731a(10) =-23883335a(11) =805349237a(12) =5097585297a(13) =-203564524787

External references