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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 15 |
| 5 | 32 |
| 6 | 71 |
| 7 | 124 |
| 8 | 211 |
| 9 | 320 |
| 10 | 499 |
| 11 | 716 |
| 12 | 999 |
| 13 | 1328 |
| 14 | 1799 |
| 15 | 2340 |
| 16 | 3023 |
| 17 | 3792 |
| 18 | 4767 |
| 19 | 5852 |
| 20 | 7135 |
| 21 | 8544 |
| 22 | 10319 |
| 23 | 12260 |
| 24 | 14471 |
| 25 | 16864 |
| 26 | 19775 |
| 27 | 22916 |
| 28 | 26467 |
| 29 | 30272 |
| 30 | 34587 |
| 31 | 39188 |
| 32 | 44347 |
| 33 | 49824 |
| 34 | 56195 |
| 35 | 62948 |
| 36 | 70311 |
| 37 | 78080 |
| 38 | 86975 |
[0,1,4,15,32,71,124,211,320,499,716,999,1328,1799, 2340,3023,3792,4767,5852,7135,8544,10319,12260, 14471,16864,19775,22916,26467,30272,34587,39188, 44347,49824,56195,62948,70311,78080,86975] |