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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 5 |
| 5 | 9 |
| 6 | 16 |
| 7 | 17 |
| 8 | 20 |
| 9 | 24 |
| 10 | 25 |
| 11 | 28 |
| 12 | 36 |
| 13 | 44 |
| 14 | 45 |
| 15 | 49 |
| 16 | 57 |
| 17 | 61 |
| 18 | 64 |
| 19 | 68 |
| 20 | 73 |
[0,1,4,5,9,16,17,20,24,25,28,36,44,45,49,57,61,64, 68,73] |