a(n) = Sum_{k=0..n} (-1)^k*P(n,k)*k!, where P(n,k) is the number of partitions of n into k parts.
A260845
a(n) = Sum_{k=0..n} (-1)^k*P(n,k)*k!, where P(n,k) is the number of partitions of n into k parts.
Terms
- a(0) =1a(1) =-1a(2) =1a(3) =-5a(4) =21a(5) =-105a(6) =635a(7) =-4507a(8) =36457a(9) =-330971a(10) =3334377a(11) =-36913947a(12) =445426739a(13) =-5818545721a(14) =81805507069
External references
- oeis: A260845