n | a(n) |
---|---|
1 | 0 |
2 | 7 |
3 | 56 |
4 | 418 |
5 | 3091 |
6 | 22845 |
7 | 168803 |
8 | 1247297 |
9 | 9216353 |
10 | 68100150 |
11 | 503195828 |
12 | 3718142207 |
13 | 27473561357 |
14 | 203003686105 |
15 | 1500005624923 |
16 | 11083625711270 |
17 | 81897532160124 |
18 | 605145459495140 |
19 | 4471453748222756 |
20 | 33039822589391675 |
[0,7,56,418,3091,22845,168803,1247297,9216353, 68100150,503195828,3718142207,27473561357, 203003686105,1500005624923,11083625711270, 81897532160124,605145459495140,4471453748222756, 33039822589391675] |