# A127280 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 3
4 4
5 168
6 360
7 465585120
8 4122326466720
9 217481422952137966221600
10 423596249162987984485389187200
11 2601085547436195054585834389287071368256718712872622796333077962782445499276184000