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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 5 |
| 3 | 44 |
| 4 | 0 |
| 5 | 121 |
| 6 | 0 |
| 7 | 225 |
| 8 | 0 |
| 9 | 361 |
| 10 | 0 |
| 11 | 529 |
| 12 | 0 |
| 13 | 729 |
| 14 | 0 |
| 15 | 961 |
| 16 | 0 |
| 17 | 1225 |
| 18 | 0 |
| 19 | 1521 |
| 20 | 0 |
| 21 | 1849 |
| 22 | 0 |
| 23 | 2209 |
| 24 | 0 |
| 25 | 2601 |
| 26 | 0 |
| 27 | 3025 |
| 28 | 0 |
| 29 | 3481 |
| 30 | 0 |
| 31 | 3969 |
| 32 | 0 |
| 33 | 4489 |
| 34 | 0 |
| 35 | 5041 |
| 36 | 0 |
| 37 | 5625 |
| 38 | 0 |
| 39 | 6241 |
| 40 | 0 |
| 41 | 6889 |
| 42 | 0 |
| 43 | 7569 |
| 44 | 0 |
| 45 | 8281 |
| 46 | 0 |
| 47 | 9025 |
| 48 | 0 |
| 49 | 9801 |
| 50 | 0 |
| 51 | 10609 |
| 52 | 0 |
| 53 | 11449 |
| 54 | 0 |
| 55 | 12321 |
| 56 | 0 |
| 57 | 13225 |
| 58 | 0 |
[1,4,5,44,0,121,0,225,0,361,0,529,0,729,0,961,0, 1225,0,1521,0,1849,0,2209,0,2601,0,3025,0,3481,0, 3969,0,4489,0,5041,0,5625,0,6241,0,6889,0,7569,0, 8281,0,9025,0,9801,0,10609,0,11449,0,12321,0, 13225,0] |