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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 324 |
| 2 | 1156 |
| 3 | 12544 |
| 4 | 21904 |
| 5 | 81796 |
| 6 | 116964 |
| 7 | 291600 |
| 8 | 379456 |
| 9 | 763876 |
| 10 | 940900 |
| 11 | 1658944 |
| 12 | 1971216 |
| 13 | 3175524 |
| 14 | 3678724 |
| 15 | 5550736 |
| 16 | 6310144 |
| 17 | 9060100 |
| 18 | 10150596 |
| 19 | 14017536 |
| 20 | 15523600 |
| 21 | 20775364 |
| 22 | 22791076 |
| 23 | 29724304 |
| 24 | 32353344 |
| 25 | 41293476 |
| 26 | 44649124 |
| 27 | 55950400 |
| 28 | 60155536 |
| 29 | 74200996 |
[0,324,1156,12544,21904,81796,116964,291600, 379456,763876,940900,1658944,1971216,3175524, 3678724,5550736,6310144,9060100,10150596,14017536, 15523600,20775364,22791076,29724304,32353344, 41293476,44649124,55950400,60155536,74200996] |