n | a(n) |
---|---|
0 | 1 |
1 | 15 |
2 | 181 |
3 | 2055 |
4 | 22861 |
5 | 252495 |
6 | 2781541 |
7 | 30613335 |
8 | 336812221 |
9 | 3705196575 |
10 | 40758210901 |
11 | 448344514215 |
12 | 4931806433581 |
13 | 54249937878255 |
14 | 596749585096261 |
15 | 6564246509800695 |
16 | 72206715902774941 |
17 | 794273892110393535 |
[1,15,181,2055,22861,252495,2781541,30613335, 336812221,3705196575,40758210901,448344514215, 4931806433581,54249937878255,596749585096261, 6564246509800695,72206715902774941, 794273892110393535] |