# A002981 (b-file synthesized from sequence entry)
1 0
2 1
3 2
4 3
5 11
6 27
7 37
8 41
9 73
10 77
11 116
12 154
13 320
14 340
15 399
16 427
17 872
18 1477
19 6380
20 26951
21 110059
22 150209
23 288465