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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 3 |
| 3 | 12 |
| 4 | 105 |
| 5 | 168 |
| 6 | 444 |
| 7 | 603 |
| 8 | 1158 |
| 9 | 2550 |
| 10 | 3060 |
| 11 | 5469 |
| 12 | 7518 |
| 13 | 8568 |
| 14 | 11292 |
| 15 | 16563 |
| 16 | 23217 |
| 17 | 25458 |
| 18 | 34167 |
| 19 | 40740 |
| 20 | 43998 |
| 21 | 56307 |
| 22 | 65391 |
| 23 | 81210 |
| 24 | 106272 |
| 25 | 120000 |
| 26 | 126750 |
| 27 | 142155 |
| 28 | 149685 |
| 29 | 166863 |
| 30 | 241152 |
[0,3,12,105,168,444,603,1158,2550,3060,5469,7518, 8568,11292,16563,23217,25458,34167,40740,43998, 56307,65391,81210,106272,120000,126750,142155, 149685,166863,241152] |