# A003809 (b-file synthesized from sequence entry)
1 9999360
2 237783237120
3 258492255436800
4 56653740000000000
5 187035198320488089600
6 4638226007491010887680
7 78660280796419613491200
8 1952052708565059186240000
9 539322992420959314658621440
10 15779626219308347912355840000
11 338200968038818404584356577280
12 4884441266449243967839995916800