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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 3 |
| 2 | 24 |
| 3 | 63 |
| 4 | 120 |
| 5 | 195 |
| 6 | 288 |
| 7 | 399 |
| 8 | 528 |
| 9 | 675 |
| 10 | 840 |
| 11 | 1023 |
| 12 | 1224 |
| 13 | 1443 |
| 14 | 1680 |
| 15 | 1935 |
| 16 | 2208 |
| 17 | 2499 |
| 18 | 2808 |
| 19 | 3135 |
| 20 | 3480 |
| 21 | 3843 |
| 22 | 4224 |
| 23 | 4623 |
| 24 | 5040 |
| 25 | 5475 |
| 26 | 5928 |
| 27 | 6399 |
| 28 | 6888 |
| 29 | 7395 |
| 30 | 7920 |
| 31 | 8463 |
| 32 | 9024 |
| 33 | 9603 |
| 34 | 10200 |
| 35 | 10815 |
| 36 | 11448 |
| 37 | 12099 |
| 38 | 12768 |
| 39 | 13455 |
[0,3,24,63,120,195,288,399,528,675,840,1023,1224, 1443,1680,1935,2208,2499,2808,3135,3480,3843,4224, 4623,5040,5475,5928,6399,6888,7395,7920,8463,9024, 9603,10200,10815,11448,12099,12768,13455] |