n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 48 |
3 | 652 |
4 | 9344 |
5 | 138004 |
6 | 2077968 |
7 | 31712412 |
8 | 488793088 |
9 | 7591462564 |
10 | 118615816048 |
11 | 1862444310060 |
12 | 29361743698304 |
13 | 464472032918196 |
14 | 7368841675386960 |
15 | 117200150284494652 |
16 | 1868129273410953216 |
17 | 29834667873867329348 |
18 | 477283242733227391152 |
19 | 7647021589988643092428 |
[1,4,48,652,9344,138004,2077968,31712412, 488793088,7591462564,118615816048,1862444310060, 29361743698304,464472032918196,7368841675386960, 117200150284494652,1868129273410953216, 29834667873867329348,477283242733227391152, 7647021589988643092428] |