# A013417 (b-file synthesized from sequence entry)
0 2
1 0
2 450
3 2240
4 1786050
5 30888000
6 36926539650
7 1356752592000
8 2425187135621250
9 154415644664112000
10 389167059569139101250
11 38253175174710405000000
12 129492439672113021377981250