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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 288 |
| 3 | 960 |
| 4 | 1632 |
| 5 | 2688 |
| 6 | 6048 |
| 7 | 9792 |
| 8 | 15840 |
| 9 | 35328 |
| 10 | 57120 |
| 11 | 92352 |
| 12 | 205920 |
| 13 | 332928 |
| 14 | 538272 |
| 15 | 1200192 |
| 16 | 1940448 |
| 17 | 3137280 |
| 18 | 6995232 |
| 19 | 11309760 |
| 20 | 18285408 |
| 21 | 40771200 |
| 22 | 65918112 |
| 23 | 106575168 |
| 24 | 237631968 |
| 25 | 384198912 |
| 26 | 621165600 |
| 27 | 1385020608 |
| 28 | 2239275360 |
| 29 | 3620418432 |
| 30 | 8072491680 |
[0,288,960,1632,2688,6048,9792,15840,35328,57120, 92352,205920,332928,538272,1200192,1940448, 3137280,6995232,11309760,18285408,40771200, 65918112,106575168,237631968,384198912,621165600, 1385020608,2239275360,3620418432,8072491680] |