a(n) = Sum_{k=0..n-1} 9^k*B(k)*binomial(n,k) where B(k) is the k-th Bernoulli number.

A083013

a(n) = Sum_{k=0..n-1} 9^k*B(k)*binomial(n,k) where B(k) is the k-th Bernoulli number.

Terms

    a(0) =0a(1) =1a(2) =-8a(3) =28a(4) =64a(5) =-980a(6) =-3104a(7) =81172a(8) =339328a(9) =-11878244a(10) =-61958240a(11) =2674671076a(12) =16735235392a(13) =-855605816468

External references