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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 4 |
| 3 | 27 |
| 4 | 112 |
| 5 | 325 |
| 6 | 792 |
| 7 | 1666 |
| 8 | 3200 |
| 9 | 5670 |
| 10 | 9500 |
| 11 | 15125 |
| 12 | 23184 |
| 13 | 34307 |
| 14 | 49392 |
| 15 | 69300 |
| 16 | 95232 |
| 17 | 128316 |
| 18 | 170100 |
| 19 | 222015 |
| 20 | 286000 |
| 21 | 363825 |
| 22 | 457864 |
| 23 | 570262 |
| 24 | 703872 |
| 25 | 861250 |
| 26 | 1045772 |
| 27 | 1260441 |
| 28 | 1509200 |
| 29 | 1795535 |
| 30 | 2124000 |
| 31 | 2498600 |
| 32 | 2924544 |
| 33 | 3406392 |
| 34 | 3950052 |
| 35 | 4560675 |
| 36 | 5244912 |
[0,0,4,27,112,325,792,1666,3200,5670,9500,15125, 23184,34307,49392,69300,95232,128316,170100, 222015,286000,363825,457864,570262,703872,861250, 1045772,1260441,1509200,1795535,2124000,2498600, 2924544,3406392,3950052,4560675,5244912] |