# A275654 (b-file synthesized from sequence entry)
0 1
1 28
2 2646
3 316540
4 42031990
5 5921058528
6 866486466720
7 130220534668224
8 19958454291525750
9 3105489721784166640
10 489023391870111994896
11 77758775451291032116200
12 12464212878673327376454304
13 2011515147856766922731424000