# A094661 (b-file synthesized from sequence entry)
2 3
3 19
4 137
5 1289
6 16909
7 259087
8 4975049
9 106267661
10 2725447213
11 85953848147
12 2903947942067
13 115669053951809
14 5061522951820999
15 231945249314081827
16 11594813068340357459
17 650803589794759938517
18 40385350464999429101033