n | a(n) |
---|---|
3 | 1 |
4 | 28 |
5 | 595 |
6 | 11480 |
7 | 211876 |
8 | 3819816 |
9 | 67945521 |
10 | 1198774720 |
11 | 21042072975 |
12 | 368136785016 |
13 | 6426898010533 |
14 | 112044912118048 |
15 | 1951641934005400 |
16 | 33976189889821200 |
17 | 591315394579074378 |
18 | 10289781864706066800 |
[1,28,595,11480,211876,3819816,67945521, 1198774720,21042072975,368136785016,6426898010533, 112044912118048,1951641934005400, 33976189889821200,591315394579074378, 10289781864706066800] |