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| n | a(n) |
|---|---|
| 5 | 72 |
| 6 | 4824 |
| 7 | 32256 |
| 8 | 127008 |
| 9 | 378000 |
| 10 | 940464 |
| 11 | 2062368 |
| 12 | 4115232 |
| 13 | 7629336 |
| 14 | 13333320 |
| 15 | 22198176 |
| 16 | 35485632 |
| 17 | 54800928 |
| 18 | 82149984 |
| 19 | 120000960 |
| 20 | 171350208 |
| 21 | 239792616 |
| 22 | 329596344 |
| 23 | 445781952 |
| 24 | 594205920 |
| 25 | 781648560 |
| 26 | 1015906320 |
| 27 | 1305888480 |
[72,4824,32256,127008,378000,940464,2062368, 4115232,7629336,13333320,22198176,35485632, 54800928,82149984,120000960,171350208,239792616, 329596344,445781952,594205920,781648560, 1015906320,1305888480] |