# A068204 (b-file synthesized from sequence entry)
1 0
2 4
3 120
4 3596
5 107760
6 3229204
7 96768360
8 2899821596
9 86897879520
10 2604036564004
11 78034199040600
12 2338421934653996
13 70074623840579280
14 2099900293282724404
15 62926934174641152840
16 1885708124945951860796