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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 6750 |
| 5 | 40241088 |
| 6 | 40396577931 |
| 7 | 18096792917796 |
| 8 | 5183615502649800 |
| 9 | 1129236431002624116 |
| 10 | 205937718403143468690 |
| 11 | 33309411205799991188160 |
| 12 | 4957409194925592040479126 |
| 13 | 695659299332984273417824080 |
| 14 | 93590807522941640152432361025 |
| 15 | 12213007949715545409829962783732 |
[0,0,0,6750,40241088,40396577931,18096792917796, 5183615502649800,1129236431002624116, 205937718403143468690,33309411205799991188160, 4957409194925592040479126, 695659299332984273417824080, 93590807522941640152432361025, 12213007949715545409829962783732] |