# A149576 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 15
4 51
5 199
6 755
7 2789
8 11425
9 45069
10 177057
11 733665
12 2980725
13 12049305
14 50487645
15 208617687
16 859190427
17 3628046575
18 15169356395
19 63268216427
20 268773317191
21 1133439243987
22 4770967084671
23 20364775412183
24 86442208982083
25 366403832827615
26 1570083042392987
27 6698851895314623