# A203268 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 19
4 116
5 683
6 4818
7 31126
8 232058
9 1598611
10 12315375
11 86887285
12 695017086
13 4999457900
14 40344295044
15 298468091712
16 2434392979661
17 18077507384936
18 150454415661096
19 1125745880242406
20 9386869540033292
21 71518155964958242
22 597727034006054509