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| n | a(n) |
|---|---|
| 0 | 12 |
| 1 | -20 |
| 2 | 76 |
| 3 | 876 |
| 4 | 3340 |
| 5 | 8812 |
| 6 | 19020 |
| 7 | 36076 |
| 8 | 62476 |
| 9 | 101100 |
| 10 | 155212 |
| 11 | 228460 |
| 12 | 324876 |
| 13 | 448876 |
| 14 | 605260 |
| 15 | 799212 |
| 16 | 1036300 |
| 17 | 1322476 |
| 18 | 1664076 |
| 19 | 2067820 |
| 20 | 2540812 |
| 21 | 3090540 |
| 22 | 3724876 |
| 23 | 4452076 |
| 24 | 5280780 |
| 25 | 6220012 |
| 26 | 7279180 |
| 27 | 8468076 |
| 28 | 9796876 |
| 29 | 11276140 |
[12,-20,76,876,3340,8812,19020,36076,62476,101100, 155212,228460,324876,448876,605260,799212,1036300, 1322476,1664076,2067820,2540812,3090540,3724876, 4452076,5280780,6220012,7279180,8468076,9796876, 11276140] |