# A145565 (b-file synthesized from sequence entry)
0 1
1 4
2 36
3 720
4 25200
5 10800
6 5821200
7 302702400
8 908107200
9 15437822400
10 3226504881600
11 248192683200
12 964724959598400
13 964724959598400
14 1607874932664000
15 186513492189024000
16 98292610383615648000
17 1605505432763232000
18 16808036375598275808000
19 124379469179427240979200