# A089252 (b-file synthesized from sequence entry)
1 1
2 6
3 72
4 1392
5 38016
6 1347840
7 58752000
8 3036579840
9 181428387840
10 12299042488320
11 932514044313600
12 78184097316864000
13 7181946863065497600
14 717283471185779097600
15 77383645289778040012800