# A151494 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 17
4 79
5 364
6 1811
7 9272
8 48993
9 264819
10 1459111
11 8168870
12 46354854
13 266122198
14 1543286620
15 9029379641
16 53243769463
17 316161637203
18 1889148487909
19 11352026514978
20 68565004825620
21 416059778720095
22 2535484046258784
23 15511973547395972
24 95244796176063627
25 586766962036461554