# A012243 (b-file synthesized from sequence entry)
0 1
1 10
2 280
3 15440
4 1412480
5 193606400
6 37162777600
7 9519986944000
8 3139364220928000
9 1295834618224640000
10 654668849830461440000
11 397456058751397068800000
12 285567610965661253632000000