n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 11 |
3 | 80 |
4 | 665 |
5 | 5980 |
6 | 56637 |
7 | 556512 |
8 | 5620485 |
9 | 57985070 |
10 | 608462470 |
11 | 6474009360 |
12 | 69682358811 |
13 | 757366074080 |
14 | 8300675584120 |
15 | 91634565938880 |
16 | 1018002755977245 |
17 | 11372548404732930 |
18 | 127677890035721025 |
19 | 1439777493407492640 |
[1,2,11,80,665,5980,56637,556512,5620485,57985070, 608462470,6474009360,69682358811,757366074080, 8300675584120,91634565938880,1018002755977245, 11372548404732930,127677890035721025, 1439777493407492640] |