# A149226 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 10
4 45
5 137
6 651
7 2225
8 10782
9 39551
10 193668
11 744173
12 3667892
13 14564363
14 72089043
15 293344604
16 1456043669
17 6038218547
18 30028994375
19 126420217768
20 629561111620
21 2683075985049
22 13374552608998
23 57581209527148
24 287235901179914
25 1247233541894547
26 6224972949360422
27 27227496594651898