n | a(n) |
---|---|
0 | 1 |
1 | 8 |
2 | 61 |
3 | 450 |
4 | 3240 |
5 | 22896 |
6 | 159408 |
7 | 1096416 |
8 | 7464960 |
9 | 50388480 |
10 | 337602816 |
11 | 2247326208 |
12 | 14874679296 |
13 | 97955205120 |
14 | 642150789120 |
15 | 4192482779136 |
16 | 27270729105408 |
17 | 176789554200576 |
18 | 1142549512519680 |
19 | 7363096858460160 |
[1,8,61,450,3240,22896,159408,1096416,7464960, 50388480,337602816,2247326208,14874679296, 97955205120,642150789120,4192482779136, 27270729105408,176789554200576,1142549512519680, 7363096858460160] |