# A074271 (b-file synthesized from sequence entry)
1 1
2 3
3 8
4 27
5 130
6 863
7 7554
8 84385
9 1165814
10 19408513
11 381328184
12 8690396907
13 226500350374
14 6671888768963
15 219904832427160
16 8040978338951561
17 323784549401655250
18 14264968083112608087