# A259076 (b-file synthesized from sequence entry)
0 1
1 80
2 6400
3 512000
4 40960000
5 3276800000
6 262144000000
7 20971520000000
8 1677721600000000
9 134217728000000000
10 10737418240000000000
11 858993459200000000000
12 68719476736000000000000