# A366942 (b-file synthesized from sequence entry)
0 1
1 1
2 6
3 48
4 408
5 5040
6 72000
7 1184400
8 22619520
9 482993280
10 11459750400
11 299495750400
12 8531976499200
13 263353163673600
14 8754879893760000
15 311808414677760000
16 11845876873678848000
17 478163414336864256000
18 20436460099541950464000
19 921972301728418676736000