# A093745 (b-file synthesized from sequence entry)
1 0
2 0
3 1
4 15
5 238
6 2401
7 22084
8 202922
9 1824043
10 16296072
11 145357801
12 1298682892
13 11638466683
14 104682551230
15 945244226939
16 8568535834789
17 77968773245740
18 712064159940996