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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 80 |
| 2 | 626 |
| 3 | 2400 |
| 4 | 6481 |
| 5 | 14640 |
| 6 | 28562 |
| 7 | 50080 |
| 8 | 83522 |
| 9 | 130320 |
| 10 | 192000 |
| 11 | 279840 |
| 12 | 391251 |
| 13 | 524960 |
| 14 | 707282 |
| 15 | 923520 |
| 16 | 1171200 |
| 17 | 1502400 |
| 18 | 1874162 |
| 19 | 2284960 |
| 20 | 2825762 |
| 21 | 3418800 |
| 22 | 4057106 |
| 23 | 4879680 |
| 24 | 5762401 |
| 25 | 6681760 |
| 26 | 7890482 |
| 27 | 9164640 |
| 28 | 10425600 |
[1,80,626,2400,6481,14640,28562,50080,83522, 130320,192000,279840,391251,524960,707282,923520, 1171200,1502400,1874162,2284960,2825762,3418800, 4057106,4879680,5762401,6681760,7890482,9164640, 10425600] |