# A037685 (b-file synthesized from sequence entry)
1 1
2 8
3 67
4 538
5 4305
6 34440
7 275523
8 2204186
9 17633489
10 141067912
11 1128543299
12 9028346394
13 72226771153
14 577814169224
15 4622513353795
16 36980106830362
17 295840854642897
18 2366726837143176