# A001425 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 129
4 43968
5 254429900
6 30468670170912
7 91267244789189735259
8 8048575431238519331999571800
9 24051927835861852500932966021650993560
10 2755731922430783367615449408031031255131879354330