# A182920 (b-file synthesized from sequence entry)
0 1
1 1
2 144
3 6480
4 41472
5 6531840
6 1343692800
7 1881169920
8 5417769369600
9 2011346878464000
10 5461111524556800
11 15060965425938432000
12 11678040884112261120000
13 15181453149345939456000
14 1987390230459832074240000
15 585336107626182041665536000000