# A307724 (b-file synthesized from sequence entry)
0 0
1 1
2 1
3 3
4 12
5 64
6 402
7 2999
8 25100
9 236278
10 2444779
11 27725926
12 340761474
13 4522224643
14 64378645709
15 979609661544
16 15862570817855
17 272466359964053
18 4948142926019039
19 94748748685737418
20 1907956061833749740
21 40310880538563569017
22 891655630401500129652
23 20608302703021633063682