# A152653 (b-file synthesized from sequence entry)
1 1
2 1
3 4
4 72
5 6912
6 4147200
7 17915904000
8 632073093120000
9 203881496916787200000
10 665860658410473652224000000
11 24162751572399267891904512000000000
12 10609496941616618062463314270617600000000000