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| n | a(n) |
|---|---|
| 1 | 1632 |
| 2 | 2916 |
| 3 | 5904 |
| 4 | 13456 |
| 5 | 34176 |
| 6 | 87616 |
| 7 | 216000 |
| 8 | 518400 |
| 9 | 1246464 |
| 10 | 3069504 |
| 11 | 7729920 |
| 12 | 19501056 |
| 13 | 48484800 |
| 14 | 118722816 |
| 15 | 289380096 |
| 16 | 710968896 |
| 17 | 1766830464 |
| 18 | 4410022464 |
| 19 | 10962427392 |
| 20 | 27051038784 |
| 21 | 66462004800 |
| 22 | 163578184704 |
| 23 | 404630224128 |
[1632,2916,5904,13456,34176,87616,216000,518400, 1246464,3069504,7729920,19501056,48484800, 118722816,289380096,710968896,1766830464, 4410022464,10962427392,27051038784,66462004800, 163578184704,404630224128] |