# A163175 (b-file synthesized from sequence entry)
0 1
1 25
2 600
3 14400
4 345300
5 8280000
6 198547500
7 4761000000
8 114164729700
9 2737573095600
10 65644673871900
11 1574103433035600
12 37745661174674100
13 905108843301991200
14 21703740051934476300
15 520437222249938431200