# A012723 (b-file synthesized from sequence entry)
0 1
1 2
2 24
3 718
4 40040
5 3586122
6 470928612
7 85257985902
8 20354196606768
9 6195953068191762
10 2342416197502447932
11 1076777305129376444790
12 591474826398069745456200
13 382625479333794154176056730