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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 25 |
| 5 | 0 |
| 6 | 49 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 121 |
| 11 | 0 |
| 12 | 169 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 289 |
| 17 | 0 |
| 18 | 361 |
| 19 | 0 |
| 20 | 0 |
| 21 | 0 |
| 22 | 529 |
| 23 | 0 |
| 24 | 625 |
| 25 | 0 |
| 26 | 729 |
| 27 | 0 |
| 28 | 841 |
| 29 | 0 |
| 30 | 961 |
| 31 | 0 |
| 32 | 0 |
| 33 | 0 |
| 34 | 1225 |
| 35 | 0 |
| 36 | 1369 |
| 37 | 0 |
| 38 | 0 |
| 39 | 0 |
| 40 | 1681 |
| 41 | 0 |
| 42 | 1849 |
[0,0,0,0,25,0,49,0,0,0,121,0,169,0,0,0,289,0,361, 0,0,0,529,0,625,0,729,0,841,0,961,0,0,0,1225,0, 1369,0,0,0,1681,0,1849] |