# A151222 (b-file synthesized from sequence entry)
0 1
1 3
2 13
3 57
4 265
5 1249
6 5985
7 28921
8 140769
9 688451
10 3380087
11 16643697
12 82146741
13 406201851
14 2011677275
15 9975162381
16 49514935929
17 245999398831
18 1223080149815
19 6084867581499
20 30288917519411
21 150841365748097
22 751509222633005
23 3745439135070101
24 18672679963259901
25 93117178620432547