# A338535 (b-file synthesized from sequence entry)
1 1
2 6
3 72
4 120
5 3528
6 840
7 3600
8 2520
9 28800
10 10080
11 129600
12 36960
13 259200
14 50400
15 176400
16 83160
17 352800
18 138600