# A037587 (b-file synthesized from sequence entry)
1 3
2 25
3 203
4 1625
5 13003
6 104025
7 832203
8 6657625
9 53261003
10 426088025
11 3408704203
12 27269633625
13 218157069003
14 1745256552025
15 13962052416203
16 111696419329625
17 893571354637003
18 7148570837096025