# A067174 (b-file synthesized from sequence entry)
1 1
2 6
3 2160
4 9144576000
5 47354185460054753280000000
6 18458571748581562066056556704775089466054740541440000000000000
7 47233748702462500435567511289038040021397635763497380756284093804903384444460824501772093090703929198069912961024000000000000000000000000000