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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 13 |
| 4 | 29 |
| 5 | 63 |
| 6 | 106 |
| 7 | 189 |
| 8 | 289 |
| 9 | 444 |
| 10 | 626 |
| 11 | 911 |
| 12 | 1203 |
| 13 | 1657 |
| 14 | 2130 |
| 15 | 2766 |
| 16 | 3462 |
| 17 | 4430 |
| 18 | 5359 |
| 19 | 6688 |
| 20 | 7992 |
| 21 | 9670 |
| 22 | 11405 |
| 23 | 13704 |
| 24 | 15840 |
| 25 | 18730 |
| 26 | 21548 |
| 27 | 25037 |
| 28 | 28521 |
| 29 | 33015 |
| 30 | 37067 |
| 31 | 42522 |
| 32 | 47690 |
| 33 | 53940 |
| 34 | 60108 |
| 35 | 67760 |
| 36 | 74748 |
| 37 | 83886 |
| 38 | 92433 |
| 39 | 102629 |
| 40 | 112469 |
[1,4,13,29,63,106,189,289,444,626,911,1203,1657, 2130,2766,3462,4430,5359,6688,7992,9670,11405, 13704,15840,18730,21548,25037,28521,33015,37067, 42522,47690,53940,60108,67760,74748,83886,92433, 102629,112469] |