# A149500 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 9
4 45
5 121
6 509
7 1745
8 6565
9 25473
10 95333
11 377369
12 1466925
13 5767385
14 23131709
15 91583241
16 369636245
17 1489745457
18 6019414749
19 24561243097
20 99915769557
21 409006211521
22 1680181737581
23 6897520420113
24 28491147830797
25 117644375606081
26 486929303998637
27 2022669691473049
28 8395994639957741