# A074655 (b-file synthesized from sequence entry)
0 1
1 2
2 14
3 186
4 2880
5 50450
6 952854
7 19003474
8 394394880
9 8439756660
10 185033201150
11 4137181680698
12 94020326259264
13 2166105078791446
14 50489825369325118
15 1188777328563863850
16 28236363841594782720
17 675879582290807439794
18 16289254212695836475436