# A370927 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 36
4 480
5 8460
6 187200
7 4998000
8 156387840
9 5614313040
10 227520921600
11 10275211679040
12 511772590264320
13 27870149349282240
14 1647541857684602880
15 105073768465758892800
16 7191330561736409088000
17 525746801445336504633600