# A013517 (b-file synthesized from sequence entry)
0 2
1 48
2 1280
3 129024
4 1769472
5 81749606400
6 4637432217600
7 3296144130048000
8 46620662575398912000
9 750318428272302489600
10 5639235345120252395520000
11 72287478143981475374039040000
12 7543041197632849604247552000000
13 1461479318123759876522171695104000000
14 4746884825265972078944013665697792000000