# A032138 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 4
5 8
6 38
7 266
8 1680
9 10248
10 79464
11 1000104
12 8399496
13 103697496
14 1238886096
15 17072760600
16 251355438936
17 3752124770520
18 60861072664560
19 1076909248451064
20 19217616589357368
21 369028769473844088