a(n) = n! * (sum of reciprocals of all parts in unrestricted partitions of n).

A057623

a(n) = n! * (sum of reciprocals of all parts in unrestricted partitions of n).

Terms

    a(0) =1a(1) =5a(2) =29a(3) =218a(4) =1814a(5) =18144a(6) =196356a(7) =2427312a(8) =32304240a(9) =475637760a(10) =7460546400a(11) =127525829760

External references