# A153305 (b-file synthesized from sequence entry)
0 1
1 3
2 15
3 109
4 1008
5 10983
6 135097
7 1828425
8 26777775
9 419530384
10 6973851684
11 122248585620
12 2249238083514
13 43274933036838
14 868047525689328
15 18108325893968859
16 392039367345646323
17 8792515088387598651