# A232216 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 9
4 43
5 264
6 2804
7 44524
8 1012456
9 30502320
10 1166185222
11 54902972542
12 3115560948081
13 209575881782122
14 16484822517084705
15 1498893370236782629
16 155996155818460127750
17 18424063865105027559797
18 2450806855748517847761175
19 364738110721163795332103692
20 60368334488355648041244493885