# A025542 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 37
4 265
5 790
6 8705
7 226225
8 226253
9 3846175
10 73077955
11 73077790
12 1680790160
13 8403949513
14 25211849540
15 1462287258305
16 45330905127575
17 45330905096635
18 45330905104591
19 1677243488794285
20 1677243488813665