# A176732 (b-file synthesized from sequence entry)
0 1
1 6
2 43
3 356
4 3333
5 34754
6 398959
7 4996032
8 67741129
9 988344062
10 15434831091
11 256840738076
12 4536075689293
13 84731451264186
14 1668866557980343
15 34563571477305464
16 750867999393119889
17 17072113130285524982
18 405423357986250112699
19 10037458628015142154452
20 258639509502117306002581