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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 9 |
| 5 | 289 |
| 6 | 1156 |
| 7 | 66049 |
| 8 | 74529 |
| 9 | 83521 |
| 10 | 93025 |
| 11 | 101761 |
| 12 | 264196 |
| 13 | 280900 |
| 14 | 298116 |
| 15 | 597529 |
| 16 | 1896129 |
| 17 | 16785409 |
| 18 | 19088161 |
| 19 | 21538881 |
| 20 | 67141636 |
| 21 | 68128516 |
| 22 | 71673156 |
| 23 | 76282756 |
| 24 | 81830116 |
| 25 | 2665553641 |
| 26 | 4295098369 |
| 27 | 4328718849 |
[0,1,4,9,289,1156,66049,74529,83521,93025,101761, 264196,280900,298116,597529,1896129,16785409, 19088161,21538881,67141636,68128516,71673156, 76282756,81830116,2665553641,4295098369, 4328718849] |