# A055995 (b-file synthesized from sequence entry)
0 1
1 7
2 64
3 576
4 5184
5 46656
6 419904
7 3779136
8 34012224
9 306110016
10 2754990144
11 24794911296
12 223154201664
13 2008387814976
14 18075490334784
15 162679413013056
16 1464114717117504
17 13177032454057536
18 118593292086517824