The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 81 |
| 3 | 400 |
| 4 | 1225 |
| 5 | 2916 |
| 6 | 5929 |
| 7 | 10816 |
| 8 | 18225 |
| 9 | 28900 |
| 10 | 43681 |
| 11 | 63504 |
| 12 | 89401 |
| 13 | 122500 |
| 14 | 164025 |
| 15 | 215296 |
| 16 | 277729 |
| 17 | 352836 |
| 18 | 442225 |
| 19 | 547600 |
| 20 | 670761 |
| 21 | 813604 |
| 22 | 978121 |
| 23 | 1166400 |
| 24 | 1380625 |
| 25 | 1623076 |
| 26 | 1896129 |
| 27 | 2202256 |
| 28 | 2544025 |
| 29 | 2924100 |
| 30 | 3345241 |
| 31 | 3810304 |
[1,4,81,400,1225,2916,5929,10816,18225,28900, 43681,63504,89401,122500,164025,215296,277729, 352836,442225,547600,670761,813604,978121,1166400, 1380625,1623076,1896129,2202256,2544025,2924100, 3345241,3810304] |