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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 4 |
| 2 | 17 |
| 3 | 44 |
| 4 | 90 |
| 5 | 160 |
| 6 | 259 |
| 7 | 392 |
| 8 | 564 |
| 9 | 780 |
| 10 | 1045 |
| 11 | 1364 |
| 12 | 1742 |
| 13 | 2184 |
| 14 | 2695 |
| 15 | 3280 |
| 16 | 3944 |
| 17 | 4692 |
| 18 | 5529 |
| 19 | 6460 |
| 20 | 7490 |
| 21 | 8624 |
| 22 | 9867 |
| 23 | 11224 |
| 24 | 12700 |
| 25 | 14300 |
| 26 | 16029 |
| 27 | 17892 |
| 28 | 19894 |
| 29 | 22040 |
| 30 | 24335 |
| 31 | 26784 |
| 32 | 29392 |
| 33 | 32164 |
| 34 | 35105 |
| 35 | 38220 |
| 36 | 41514 |
| 37 | 44992 |
| 38 | 48659 |
| 39 | 52520 |
| 40 | 56580 |
[0,4,17,44,90,160,259,392,564,780,1045,1364,1742, 2184,2695,3280,3944,4692,5529,6460,7490,8624,9867, 11224,12700,14300,16029,17892,19894,22040,24335, 26784,29392,32164,35105,38220,41514,44992,48659, 52520,56580] |