# A036773 (b-file synthesized from sequence entry)
0 1
1 6
2 13860
3 423783360
4 70220478968640
5 41004669682770393600
6 65405789473547026656472320
7 240729724316568938710767014707200
8 1813083536072533851678174232377806438400
9 25541737277107694920826740625991927645705830400