# A087650 (b-file synthesized from sequence entry)
0 1
1 0
2 2
3 3
4 12
5 40
6 163
7 714
8 3426
9 17721
10 98254
11 580316
12 3633281
13 24011156
14 166888166
15 1216070379
16 9264071768
17 73600798036
18 608476008123
19 5224266196934
20 46499892038438
21 428369924118313
22 4078345814329010
23 40073660040755336