n | a(n) |
---|---|
8 | 1 |
9 | 8 |
10 | 72 |
11 | 600 |
12 | 5280 |
13 | 48312 |
14 | 465036 |
15 | 4708704 |
16 | 50160825 |
17 | 561623920 |
18 | 6600378928 |
19 | 81297463104 |
20 | 1047817553016 |
21 | 14109488456400 |
22 | 198192170408400 |
23 | 2899804394683680 |
24 | 44131025207930595 |
25 | 697636040687261280 |
26 | 11441167306954104500 |
27 | 194421818718469399200 |
[1,8,72,600,5280,48312,465036,4708704,50160825, 561623920,6600378928,81297463104,1047817553016, 14109488456400,198192170408400,2899804394683680, 44131025207930595,697636040687261280, 11441167306954104500,194421818718469399200] |