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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 8 |
| 2 | 320 |
| 3 | 3672 |
| 4 | 18944 |
| 5 | 65000 |
| 6 | 174528 |
| 7 | 397880 |
| 8 | 806912 |
| 9 | 1498824 |
| 10 | 2600000 |
| 11 | 4269848 |
| 12 | 6704640 |
| 13 | 10141352 |
| 14 | 14861504 |
| 15 | 21195000 |
| 16 | 29523968 |
| 17 | 40286600 |
| 18 | 53980992 |
| 19 | 71168984 |
| 20 | 92480000 |
| 21 | 118614888 |
| 22 | 150349760 |
| 23 | 188539832 |
| 24 | 234123264 |
| 25 | 288125000 |
| 26 | 351660608 |
| 27 | 425940120 |
[0,8,320,3672,18944,65000,174528,397880,806912, 1498824,2600000,4269848,6704640,10141352,14861504, 21195000,29523968,40286600,53980992,71168984, 92480000,118614888,150349760,188539832,234123264, 288125000,351660608,425940120] |