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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 4 |
| 3 | 1 |
| 4 | 0 |
| 5 | 16 |
| 6 | 4 |
| 7 | 9 |
| 8 | 1 |
| 9 | 0 |
| 10 | 36 |
| 11 | 9 |
| 12 | 4 |
| 13 | 32400 |
| 14 | 16 |
| 15 | 1 |
| 16 | 0 |
| 17 | 64 |
| 18 | 16 |
| 19 | 1521 |
| 20 | 4 |
| 21 | 144 |
| 22 | 1764 |
| 23 | 25 |
| 24 | 1 |
| 25 | 0 |
| 26 | 100 |
| 27 | 25 |
| 28 | 576 |
| 29 | 3312400 |
| 30 | 4 |
| 31 | 74529 |
| 32 | 9 |
| 33 | 16 |
| 34 | 36 |
| 35 | 1 |
| 36 | 0 |
| 37 | 144 |
| 38 | 36 |
| 39 | 16 |
| 40 | 9 |
| 41 | 102400 |
| 42 | 4 |
| 43 | 281961 |
| 44 | 900 |
| 45 | 576 |
| 46 | 12873744 |
| 47 | 49 |
| 48 | 1 |
| 49 | 0 |
| 50 | 196 |
| 51 | 49 |
| 52 | 8100 |
| 53 | 82810000 |
| 54 | 4356 |
| 55 | 144 |
| 56 | 4 |
| 57 | 400 |
| 58 | 6625476 |
[0,4,1,0,16,4,9,1,0,36,9,4,32400,16,1,0,64,16, 1521,4,144,1764,25,1,0,100,25,576,3312400,4,74529, 9,16,36,1,0,144,36,16,9,102400,4,281961,900,576, 12873744,49,1,0,196,49,8100,82810000,4356,144,4, 400,6625476] |