a(n) = Bernoulli(2*n) * (2*n+1)! if 2*n+1 is a prime, otherwise a(n) = Bernoulli(2*n) * (2*n)!.
A347425
a(n) = Bernoulli(2*n) * (2*n+1)! if 2*n+1 is a prime, otherwise a(n) = Bernoulli(2*n) * (2*n)!.
Terms
- a(0) =1a(1) =1a(2) =-4a(3) =120a(4) =-1344a(5) =3024000a(6) =-1576143360a(7) =101708006400
External references
- oeis: A347425