# A174227 (b-file synthesized from sequence entry)
0 1
1 1
2 12
3 145
4 1764
5 21602
6 266232
7 3301349
8 41178660
9 516512462
10 6513158376
11 82542517386
12 1051024082472
13 13442267711940
14 172638285341040
15 2225824753934445
16 28802104070304420
17 373966734921011990