| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 108 |
| 2 | 1152 |
| 3 | 6000 |
| 4 | 21600 |
| 5 | 61740 |
| 6 | 150528 |
| 7 | 326592 |
| 8 | 648000 |
| 9 | 1197900 |
| 10 | 2090880 |
| 11 | 3480048 |
| 12 | 5564832 |
| 13 | 8599500 |
| 14 | 12902400 |
| 15 | 18865920 |
| 16 | 26967168 |
| 17 | 37779372 |
| 18 | 51984000 |
| 19 | 70383600 |
| 20 | 93915360 |
| 21 | 123665388 |
| 22 | 160883712 |
| 23 | 207000000 |
| 24 | 263640000 |
| 25 | 332642700 |
[0,108,1152,6000,21600,61740,150528,326592,648000, 1197900,2090880,3480048,5564832,8599500,12902400, 18865920,26967168,37779372,51984000,70383600, 93915360,123665388,160883712,207000000,263640000, 332642700] |