# A218295 (b-file synthesized from sequence entry)
0 1
1 2
2 14
3 158
4 2274
5 37410
6 670670
7 12786622
8 255519106
9 5302716866
10 113586849614
11 2501007496542
12 56446396937186
13 1303401799574242
14 30756416720161422
15 741216834445478270
16 18240706372460480002
17 458484823574294544770
18 11776969626284389958030