# A264801 (b-file synthesized from sequence entry)
1 0
2 6
3 2400
4 6375600
5 45927907200
6 713518388352000
7 21216194909362252800
8 1105729617210350356224000
9 94398452626533646953922560000
10 12514511465855205467497303154688000
11 2467490887755897725667792936979169280000
12 698323914872709997998407130752506728284160000