# A125317 (b-file synthesized from sequence entry)
0 1
1 7
2 37
3 175
4 925
5 4977
6 27067
7 147777
8 808165
9 4422703
10 24210127
11 132542813
12 725664307
13 3973047319
14 21752799623
15 119098967235
16 652080798837
17 3570220727531
18 19547391880633
19 107024353337437
20 585971402810715