n | a(n) |
---|---|
4 | 1 |
5 | 10 |
6 | 85 |
7 | 735 |
8 | 6769 |
9 | 67284 |
10 | 723680 |
11 | 8409500 |
12 | 105258076 |
13 | 1414014888 |
14 | 20313753096 |
15 | 310989260400 |
16 | 5056995703824 |
17 | 87077748875904 |
18 | 1583313975727488 |
19 | 30321254007719424 |
20 | 610116075740491776 |
[1,10,85,735,6769,67284,723680,8409500,105258076, 1414014888,20313753096,310989260400,5056995703824, 87077748875904,1583313975727488,30321254007719424, 610116075740491776] |