n | a(n) |
---|---|
0 | 1 |
1 | 15 |
2 | 141 |
3 | 1275 |
4 | 11481 |
5 | 103335 |
6 | 930021 |
7 | 8370195 |
8 | 75331761 |
9 | 677985855 |
10 | 6101872701 |
11 | 54916854315 |
12 | 494251688841 |
13 | 4448265199575 |
14 | 40034386796181 |
15 | 360309481165635 |
16 | 3242785330490721 |
17 | 29185067974416495 |
18 | 262665611769748461 |
[1,15,141,1275,11481,103335,930021,8370195, 75331761,677985855,6101872701,54916854315, 494251688841,4448265199575,40034386796181, 360309481165635,3242785330490721, 29185067974416495,262665611769748461] |