# A149359 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 43
5 164
6 640
7 2610
8 10853
9 46147
10 198963
11 869969
12 3847766
13 17166855
14 77287041
15 350280733
16 1597749772
17 7329614871
18 33785010841
19 156445491596
20 727303985933
21 3393480786653
22 15886260895083
23 74591886573651
24 351213344906583
25 1657862411871953
26 7844085620080768
27 37194565658658818