# A148460 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 18
5 59
6 210
7 767
8 2901
9 11295
10 44756
11 180348
12 738130
13 3057350
14 12789793
15 54032745
16 230170481
17 987155382
18 4262047055
19 18511560553
20 80808289797
21 354440593530
22 1561601787236
23 6907093680245
24 30660957686730
25 136574647572439
26 610247973013998
27 2734489839406472
28 12286433733748477