# A085348 (b-file synthesized from sequence entry)
0 1
1 4
2 19
3 72
4 341
5 1292
6 6119
7 23184
8 109801
9 416020
10 1970299
11 7465176
12 35355581
13 133957148
14 634430159
15 2403763488
16 11384387281
17 43133785636
18 204284540899
19 774004377960
20 3665737348901
21 13888945017644
22 65778987739319