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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 25 |
| 2 | 649 |
| 3 | 17065 |
| 4 | 451621 |
| 5 | 11998801 |
| 6 | 319623445 |
| 7 | 8530126057 |
| 8 | 227974775239 |
| 9 | 6099550226965 |
| 10 | 163340461497907 |
| 11 | 4377292845062689 |
| 12 | 117376545230379631 |
| 13 | 3149059523347103293 |
| 14 | 84522568856319875179 |
| 15 | 2269506752111508954553 |
[1,25,649,17065,451621,11998801,319623445, 8530126057,227974775239,6099550226965, 163340461497907,4377292845062689, 117376545230379631,3149059523347103293, 84522568856319875179,2269506752111508954553] |