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| n | a(n) |
|---|---|
| 20 | 0 |
| 21 | 2 |
| 22 | 11 |
| 23 | 18 |
| 24 | 32 |
| 25 | 25 |
| 26 | 44 |
| 27 | 63 |
| 28 | 56 |
| 29 | 80 |
| 30 | 104 |
| 31 | 68 |
| 32 | 97 |
| 33 | 126 |
| 34 | 155 |
| 35 | 114 |
| 36 | 148 |
| 37 | 182 |
| 38 | 131 |
| 39 | 170 |
| 40 | 216 |
[0,2,11,18,32,25,44,63,56,80,104,68,97,126,155, 114,148,182,131,170,216] |