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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 15 |
| 4 | 48 |
| 5 | 115 |
| 6 | 217 |
| 7 | 385 |
| 8 | 611 |
| 9 | 945 |
| 10 | 1366 |
| 11 | 1947 |
| 12 | 2650 |
| 13 | 3575 |
| 14 | 4663 |
| 15 | 6045 |
| 16 | 7637 |
| 17 | 9605 |
| 18 | 11836 |
| 19 | 14535 |
| 20 | 17556 |
| 21 | 21147 |
| 22 | 25125 |
| 23 | 29785 |
| 24 | 34903 |
| 25 | 40825 |
| 26 | 47282 |
| 27 | 54675 |
| 28 | 62686 |
| 29 | 71775 |
| 30 | 81571 |
| 31 | 92597 |
| 32 | 104425 |
| 33 | 117645 |
| 34 | 131768 |
| 35 | 147455 |
| 36 | 164152 |
| 37 | 182595 |
| 38 | 202161 |
| 39 | 223665 |
| 40 | 246411 |
| 41 | 271297 |
| 42 | 297550 |
[0,0,0,15,48,115,217,385,611,945,1366,1947,2650, 3575,4663,6045,7637,9605,11836,14535,17556,21147, 25125,29785,34903,40825,47282,54675,62686,71775, 81571,92597,104425,117645,131768,147455,164152, 182595,202161,223665,246411,271297,297550] |