# A149708 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 17
4 71
5 275
6 1197
7 5015
8 22283
9 96237
10 432479
11 1908495
12 8659109
13 38763863
14 177016943
15 800411443
16 3674033371
17 16740426241
18 77162216045
19 353660756327
20 1635698336915
21 7532360479213
22 34938080545161
23 161509862609757
24 750995241429291
25 3482801514066409
26 16229200948512393
27 75468695084619587