# A151296 (b-file synthesized from sequence entry)
0 1
1 2
2 7
3 26
4 104
5 436
6 1878
7 8285
8 37144
9 168793
10 775209
11 3591445
12 16760364
13 78696089
14 371450137
15 1761190032
16 8383369989
17 40042977165
18 191846857887
19 921629216986
20 4438189698963
21 21418876479779
22 103570607307949
23 501701667445534
24 2434187911313517
25 11827723470989792
26 57548359992678038
27 280350852928397935