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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 720 |
| 4 | 4576 |
| 5 | 13640 |
| 6 | 28224 |
| 7 | 48232 |
| 8 | 73408 |
| 9 | 103692 |
| 10 | 139056 |
| 11 | 179500 |
| 12 | 225024 |
| 13 | 275628 |
| 14 | 331312 |
| 15 | 392076 |
| 16 | 457920 |
| 17 | 528844 |
| 18 | 604848 |
| 19 | 685932 |
| 20 | 772096 |
| 21 | 863340 |
| 22 | 959664 |
| 23 | 1061068 |
| 24 | 1167552 |
| 25 | 1279116 |
| 26 | 1395760 |
| 27 | 1517484 |
| 28 | 1644288 |
| 29 | 1776172 |
| 30 | 1913136 |
| 31 | 2055180 |
| 32 | 2202304 |
[0,0,720,4576,13640,28224,48232,73408,103692, 139056,179500,225024,275628,331312,392076,457920, 528844,604848,685932,772096,863340,959664,1061068, 1167552,1279116,1395760,1517484,1644288,1776172, 1913136,2055180,2202304] |