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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 9 |
| 5 | 13 |
| 6 | 18 |
| 7 | 24 |
| 8 | 30 |
| 9 | 35 |
| 10 | 43 |
| 11 | 52 |
| 12 | 61 |
| 13 | 69 |
| 14 | 80 |
| 15 | 92 |
| 16 | 102 |
| 17 | 113 |
| 18 | 125 |
| 19 | 140 |
| 20 | 155 |
| 21 | 169 |
| 22 | 184 |
| 23 | 202 |
| 24 | 220 |
| 25 | 231 |
| 26 | 251 |
| 27 | 270 |
| 28 | 291 |
| 29 | 309 |
| 30 | 332 |
| 31 | 354 |
| 32 | 376 |
| 33 | 397 |
| 34 | 419 |
| 35 | 446 |
| 36 | 469 |
| 37 | 493 |
| 38 | 520 |
| 39 | 550 |
| 40 | 578 |
| 41 | 601 |
| 42 | 631 |
| 43 | 660 |
| 44 | 693 |
| 45 | 721 |
| 46 | 754 |
| 47 | 788 |
[1,3,6,9,13,18,24,30,35,43,52,61,69,80,92,102,113, 125,140,155,169,184,202,220,231,251,270,291,309, 332,354,376,397,419,446,469,493,520,550,578,601, 631,660,693,721,754,788] |