# A032323 (b-file synthesized from sequence entry)
1 4
2 12
3 120
4 1440
5 24480
6 482400
7 11793600
8 329011200
9 10567065600
10 380131315200
11 15220275840000
12 669519696384000
13 32145251314176000
14 1671451069736448000
15 93606882905023488000
16 5616332944630087680000