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| n | a(n) |
|---|---|
| 1 | 26 |
| 2 | 676 |
| 3 | 3910 |
| 4 | 23637 |
| 5 | 117835 |
| 6 | 612439 |
| 7 | 3327954 |
| 8 | 17621905 |
| 9 | 92785236 |
| 10 | 493226298 |
| 11 | 2618710999 |
| 12 | 13869205695 |
| 13 | 73534808659 |
| 14 | 390043559718 |
| 15 | 2067950383577 |
| 16 | 10964045099346 |
| 17 | 58137529835416 |
| 18 | 308266004747279 |
| 19 | 1634495531671201 |
[26,676,3910,23637,117835,612439,3327954,17621905, 92785236,493226298,2618710999,13869205695, 73534808659,390043559718,2067950383577, 10964045099346,58137529835416,308266004747279, 1634495531671201] |