# A056628 (b-file synthesized from sequence entry)
1 1
2 1
3 1
4 1
5 1
6 144
7 144
8 144
9 1296
10 518400
11 518400
12 230400
13 230400
14 2822400
15 9144576
16 146313216
17 146313216
18 21069103104
19 21069103104
20 52672757760000
21 119439360000
22 3613040640000
23 3613040640000
24 18730002677760000
25 468250066944000000
26 19783565328384000000
27 19783565328384000000