# A012373 (b-file synthesized from sequence entry)
0 1
1 0
2 12
3 120
4 12432
5 680640
6 102772032
7 14295765120
8 3342487648512
9 854980598876160
10 298224965387983872
11 119257847834622351360
12 59074248780911484506112
13 33687669462151354934968320