79991160144
domain: N
Appears in sequences
- Expansion of e.g.f. (1 + x)^x.at n=14A007113
- Stanley's children's game. Class of n (named) children forms into rings with exactly one child inside each ring. We allow the case when outer ring has only one child. a(n) gives number of possibilities, including clockwise order (or which hand is held), in each ring.at n=12A066166