# A003764 (b-file synthesized from sequence entry)
1 1
2 13
3 85
4 673
5 5021
6 38237
7 289089
8 2191309
9 16594837
10 125714929
11 952245373
12 7213225309
13 54639088433
14 413885098253
15 3135127983381
16 23748220228801
17 179889887447581
18 1362644200671133
19 10321865130390817