# A151180 (b-file synthesized from sequence entry)
0 1
1 3
2 12
3 50
4 227
5 1047
6 4939
7 23571
8 113575
9 550785
10 2685286
11 13143538
12 64538881
13 317716079
14 1567357416
15 7745417246
16 38330815841
17 189923526167
18 942013070950
19 4676466466360
20 23233166431451
21 115500619414161
22 574524637022633
23 2859238829041077
24 14235846954865105
25 70906304719276783
26 353293684393014734