# A024426 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 3
5 10
6 33
7 125
8 517
9 2349
10 11597
11 61688
12 351133
13 2126495
14 13635665
15 92197236
16 655008884
17 4874404106
18 37893155897
19 306986431845
20 2586207911768
21 22612848388416
22 204850715383969
23 1919652428481928
24 18581619553950220