# A165984 (b-file synthesized from sequence entry)
0 1
1 1
2 36
3 3654
4 766480
5 275234400
6 151111164204
7 117774526188844
8 123672890985095232
9 168324948170849366820
10 288216356245328994082600
11 606320062786763763996747618
12 1537230010624231669678572481296
13 4622745700243196227504110670860680