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| n | a(n) |
|---|---|
| -1 | 0 |
| 0 | 24 |
| 1 | 84 |
| 2 | 204 |
| 3 | 414 |
| 4 | 750 |
| 5 | 1254 |
| 6 | 1974 |
| 7 | 2964 |
| 8 | 4284 |
| 9 | 6000 |
| 10 | 8184 |
| 11 | 10914 |
| 12 | 14274 |
| 13 | 18354 |
| 14 | 23250 |
| 15 | 29064 |
| 16 | 35904 |
| 17 | 43884 |
| 18 | 53124 |
| 19 | 63750 |
| 20 | 75894 |
| 21 | 89694 |
| 22 | 105294 |
| 23 | 122844 |
| 24 | 142500 |
| 25 | 164424 |
| 26 | 188784 |
| 27 | 215754 |
| 28 | 245514 |
| 29 | 278250 |
| 30 | 314154 |
| 31 | 353424 |
| 32 | 396264 |
| 33 | 442884 |
| 34 | 493500 |
| 35 | 548334 |
[0,24,84,204,414,750,1254,1974,2964,4284,6000, 8184,10914,14274,18354,23250,29064,35904,43884, 53124,63750,75894,89694,105294,122844,142500, 164424,188784,215754,245514,278250,314154,353424, 396264,442884,493500,548334] |