a(n) = (4*n+2)*a(n-1) + (-1)^(n+1)*4*((n-1)!), with a(0) = 8, n > 0.
A302865
a(n) = (4*n+2)*a(n-1) + (-1)^(n+1)*4*((n-1)!), with a(0) = 8, n > 0.
Terms
- a(0) =8a(1) =52a(2) =516a(3) =7232a(4) =130152a(5) =2863440a(6) =74448960a(7) =2233471680a(8) =75938016960
External references
- oeis: A302865