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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 6 |
| 3 | 10 |
| 4 | 15 |
| 5 | 22 |
| 6 | 30 |
| 7 | 39 |
| 8 | 50 |
| 9 | 62 |
| 10 | 75 |
| 11 | 89 |
| 12 | 105 |
| 13 | 122 |
| 14 | 140 |
| 15 | 159 |
| 16 | 179 |
| 17 | 200 |
| 18 | 223 |
| 19 | 247 |
| 20 | 272 |
| 21 | 298 |
| 22 | 325 |
| 23 | 353 |
| 24 | 382 |
| 25 | 413 |
| 26 | 445 |
| 27 | 478 |
| 28 | 512 |
| 29 | 547 |
| 30 | 583 |
| 31 | 620 |
| 32 | 658 |
| 33 | 698 |
| 34 | 739 |
| 35 | 781 |
| 36 | 824 |
| 37 | 868 |
| 38 | 913 |
| 39 | 959 |
| 40 | 1006 |
| 41 | 1054 |
| 42 | 1103 |
| 43 | 1154 |
| 44 | 1206 |
| 45 | 1259 |
| 46 | 1313 |
| 47 | 1368 |
| 48 | 1424 |
| 49 | 1481 |
| 50 | 1539 |
[3,6,10,15,22,30,39,50,62,75,89,105,122,140,159, 179,200,223,247,272,298,325,353,382,413,445,478, 512,547,583,620,658,698,739,781,824,868,913,959, 1006,1054,1103,1154,1206,1259,1313,1368,1424,1481, 1539] |