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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 30 |
| 3 | 100 |
| 4 | 231 |
| 5 | 448 |
| 6 | 780 |
| 7 | 1260 |
| 8 | 1925 |
| 9 | 2816 |
| 10 | 3978 |
| 11 | 5460 |
| 12 | 7315 |
| 13 | 9600 |
| 14 | 12376 |
| 15 | 15708 |
| 16 | 19665 |
| 17 | 24320 |
| 18 | 29750 |
| 19 | 36036 |
| 20 | 43263 |
| 21 | 51520 |
| 22 | 60900 |
| 23 | 71500 |
| 24 | 83421 |
| 25 | 96768 |
| 26 | 111650 |
| 27 | 128180 |
| 28 | 146475 |
| 29 | 166656 |
| 30 | 188848 |
[0,30,100,231,448,780,1260,1925,2816,3978,5460, 7315,9600,12376,15708,19665,24320,29750,36036, 43263,51520,60900,71500,83421,96768,111650,128180, 146475,166656,188848] |