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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 117 |
| 4 | 6489 |
| 5 | 658485 |
| 6 | 106430625 |
| 7 | 25118936325 |
| 8 | 8155198067625 |
| 9 | 3487089096847125 |
| 10 | 1899731241471380625 |
| 11 | 1284694587236408473125 |
| 12 | 1055971667165040426425625 |
| 13 | 1036878703966440780963643125 |
| 14 | 1198747700236534020909882170625 |
| 15 | 1611760245892952477624798223853125 |
[1,5,117,6489,658485,106430625,25118936325, 8155198067625,3487089096847125, 1899731241471380625,1284694587236408473125, 1055971667165040426425625, 1036878703966440780963643125, 1198747700236534020909882170625, 1611760245892952477624798223853125] |