# A134716 (b-file synthesized from sequence entry)
0 1
1 2
2 12
3 180
4 27720
5 122522400
6 130429015516800
7 1970992304700453905270400
8 1897544233056092162003806758651798777216000
9 4368924363354820808981210203132513655327781713900627249499856876120704000