a(n) = (36^n/6)*B(2n,1/6)/B(2n) where B(n,x) is the n-th Bernoulli polynomial and B(k) = B(k,0) is the k-th Bernoulli number.

A096054

a(n) = (36^n/6)*B(2n,1/6)/B(2n) where B(n,x) is the n-th Bernoulli polynomial and B(k) = B(k,0) is the k-th Bernoulli number.

Terms

    a(0) =1a(1) =91a(2) =3751a(3) =138811a(4) =5028751a(5) =181308931a(6) =6529545751a(7) =235085301451

External references