# A151440 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 8
4 30
5 104
6 418
7 1619
8 6811
9 27995
10 121479
11 518165
12 2298497
13 10057101
14 45342297
15 202127226
16 922674852
17 4172053826
18 19231818364
19 87941092870
20 408591525432
21 1885356748718
22 8816855295648
23 40987943515892
24 192726338718178
25 901557225420892
26 4258807073126730
27 20028060258669392