a(0) = 1; then a(n) = n!*(1 - (-1)^n*Bernoulli(n-1)).
A129724
a(0) = 1; then a(n) = n!*(1 - (-1)^n*Bernoulli(n-1)).
Terms
- a(0) =1a(1) =2a(2) =3a(3) =7a(4) =24a(5) =116a(6) =720a(7) =5160a(8) =40320a(9) =350784a(10) =3628800a(11) =42940800a(12) =479001600a(13) =4650877440a(14) =87178291200
External references
- oeis: A129724