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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 15 |
| 3 | 42 |
| 4 | 82 |
| 5 | 135 |
| 6 | 201 |
| 7 | 280 |
| 8 | 372 |
| 9 | 477 |
| 10 | 595 |
| 11 | 726 |
| 12 | 870 |
| 13 | 1027 |
| 14 | 1197 |
| 15 | 1380 |
| 16 | 1576 |
| 17 | 1785 |
| 18 | 2007 |
| 19 | 2242 |
| 20 | 2490 |
| 21 | 2751 |
| 22 | 3025 |
| 23 | 3312 |
| 24 | 3612 |
| 25 | 3925 |
| 26 | 4251 |
| 27 | 4590 |
| 28 | 4942 |
| 29 | 5307 |
| 30 | 5685 |
| 31 | 6076 |
| 32 | 6480 |
| 33 | 6897 |
| 34 | 7327 |
| 35 | 7770 |
| 36 | 8226 |
| 37 | 8695 |
| 38 | 9177 |
| 39 | 9672 |
| 40 | 10180 |
| 41 | 10701 |
[0,1,15,42,82,135,201,280,372,477,595,726,870, 1027,1197,1380,1576,1785,2007,2242,2490,2751,3025, 3312,3612,3925,4251,4590,4942,5307,5685,6076,6480, 6897,7327,7770,8226,8695,9177,9672,10180,10701] |