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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 25 |
| 3 | 997 |
| 4 | 40899 |
| 5 | 800290 |
| 6 | 22483347 |
| 7 | 657253434 |
| 8 | 19077209438 |
| 9 | 517312744806 |
| 10 | 14571957312254 |
| 11 | 412240433359025 |
| 12 | 11632857444709188 |
| 13 | 326275845576101452 |
| 14 | 9187549952207915190 |
| 15 | 258821654387452112268 |
| 16 | 7288072624408347082481 |
| 17 | 205113474464891986564786 |
[1,1,25,997,40899,800290,22483347,657253434, 19077209438,517312744806,14571957312254, 412240433359025,11632857444709188, 326275845576101452,9187549952207915190, 258821654387452112268,7288072624408347082481, 205113474464891986564786] |