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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 9 |
| 5 | 16 |
| 6 | 121 |
| 7 | 324 |
| 8 | 529 |
| 9 | 4096 |
| 10 | 11025 |
| 11 | 17956 |
| 12 | 139129 |
| 13 | 374544 |
| 14 | 609961 |
| 15 | 4726276 |
| 16 | 12723489 |
| 17 | 20720704 |
| 18 | 160554241 |
| 19 | 432224100 |
| 20 | 703893961 |
| 21 | 5454117904 |
| 22 | 14682895929 |
| 23 | 23911673956 |
| 24 | 185279454481 |
| 25 | 498786237504 |
| 26 | 812293020529 |
| 27 | 6294047334436 |
| 28 | 16944049179225 |
| 29 | 27594051024016 |
[0,1,4,9,16,121,324,529,4096,11025,17956,139129, 374544,609961,4726276,12723489,20720704,160554241, 432224100,703893961,5454117904,14682895929, 23911673956,185279454481,498786237504, 812293020529,6294047334436,16944049179225, 27594051024016] |