# A052629 (b-file synthesized from sequence entry)
0 1
1 4
2 34
3 438
4 7536
5 162120
6 4185360
7 126060480
8 4339278720
9 168038478720
10 7230318681600
11 342214829510400
12 17669683572710400
13 988372892015308800
14 59538455210371737600
15 3842709218808235776000
16 264549049753191211008000