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| n | a(n) |
|---|---|
| 4 | 0 |
| 5 | 3 |
| 6 | 13 |
| 7 | 37 |
| 8 | 87 |
| 9 | 180 |
| 10 | 341 |
| 11 | 612 |
| 12 | 1019 |
| 13 | 1638 |
| 14 | 2520 |
| 15 | 3696 |
| 16 | 5258 |
| 17 | 7345 |
| 18 | 10085 |
| 19 | 13456 |
| 20 | 17722 |
| 21 | 22936 |
| 22 | 29094 |
| 23 | 36577 |
| 24 | 45419 |
| 25 | 55969 |
| 26 | 68677 |
| 27 | 83398 |
| 28 | 100048 |
| 29 | 119035 |
| 30 | 140228 |
| 31 | 164100 |
| 32 | 192823 |
| 33 | 225035 |
| 34 | 261447 |
| 35 | 301439 |
| 36 | 347315 |
| 37 | 397420 |
| 38 | 453162 |
| 39 | 514981 |
| 40 | 582618 |
| 41 | 657163 |
[0,3,13,37,87,180,341,612,1019,1638,2520,3696, 5258,7345,10085,13456,17722,22936,29094,36577, 45419,55969,68677,83398,100048,119035,140228, 164100,192823,225035,261447,301439,347315,397420, 453162,514981,582618,657163] |