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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 8 |
| 6 | 12 |
| 7 | 16 |
| 8 | 21 |
| 9 | 27 |
| 10 | 33 |
| 11 | 40 |
| 12 | 48 |
| 13 | 56 |
| 14 | 65 |
| 15 | 75 |
| 16 | 85 |
| 17 | 96 |
| 18 | 108 |
| 19 | 120 |
| 20 | 133 |
| 21 | 147 |
| 22 | 161 |
| 23 | 176 |
| 24 | 192 |
| 25 | 208 |
| 26 | 225 |
| 27 | 243 |
| 28 | 261 |
| 29 | 280 |
| 30 | 300 |
| 31 | 320 |
| 32 | 341 |
| 33 | 363 |
| 34 | 385 |
| 35 | 408 |
| 36 | 432 |
| 37 | 456 |
| 38 | 481 |
| 39 | 507 |
| 40 | 533 |
| 41 | 560 |
| 42 | 588 |
| 43 | 616 |
| 44 | 645 |
| 45 | 675 |
| 46 | 705 |
| 47 | 736 |
| 48 | 768 |
| 49 | 800 |
| 50 | 833 |
| 51 | 867 |
| 52 | 901 |
| 53 | 936 |
[0,0,1,3,5,8,12,16,21,27,33,40,48,56,65,75,85,96, 108,120,133,147,161,176,192,208,225,243,261,280, 300,320,341,363,385,408,432,456,481,507,533,560, 588,616,645,675,705,736,768,800,833,867,901,936] |