# A005154 (b-file synthesized from sequence entry)
0 1
1 2
2 10
3 268
4 195472
5 104310534400
6 29722161121961969778688
7 2413441860555924454205324333893477339897004032
8 15913289476042091181119569948276231488639535067163704670852319029791565485433738366445158400