# A364437 (b-file synthesized from sequence entry)
0 1
1 1
2 6
3 42
4 326
5 2712
6 23676
7 214068
8 1987488
9 18838464
10 181548960
11 1773566208
12 17523740592
13 174814263088
14 1758342057504
15 17812729393248
16 181581358338528
17 1861259423846400
18 19172185074938112
19 198354225907274496
20 2060279149742042112