# A009274 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 5
5 32
6 157
7 688
8 3817
9 29952
10 257049
11 1922560
12 15886125
13 160364544
14 1844058101
15 19815696384
16 218349214545
17 2743045259264
18 38729647296945
19 538516252917760
20 7468216325125589
21 112957538226929664
22 1882371895493492429