# A151097 (b-file synthesized from sequence entry)
0 1
1 3
2 11
3 43
4 180
5 774
6 3431
7 15428
8 70548
9 325431
10 1516925
11 7112596
12 33584632
13 159251552
14 758919860
15 3628089772
16 17408822079
17 83737680086
18 403929643759
19 1952239163441
20 9456497683517
21 45878748056839
22 222983221783390
23 1085170262087486
24 5288848011083883
25 25804657251783199
26 126056290017227100