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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 9 |
| 4 | 8 |
| 5 | 10 |
| 6 | 10 |
| 7 | 11 |
| 8 | 12 |
| 9 | 15 |
| 10 | 18 |
| 11 | 21 |
| 12 | 28 |
| 13 | 32 |
| 14 | 38 |
| 15 | 40 |
| 16 | 43 |
| 17 | 47 |
| 18 | 52 |
| 19 | 58 |
| 20 | 64 |
| 21 | 72 |
[1,4,9,8,10,10,11,12,15,18,21,28,32,38,40,43,47, 52,58,64,72] |