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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 11 |
| 5 | 17 |
| 6 | 25 |
| 7 | 34 |
| 8 | 44 |
| 9 | 56 |
| 10 | 69 |
| 11 | 84 |
| 12 | 100 |
| 13 | 117 |
| 14 | 136 |
| 15 | 156 |
| 16 | 178 |
| 17 | 201 |
| 18 | 226 |
| 19 | 252 |
| 20 | 279 |
| 21 | 308 |
| 22 | 338 |
| 23 | 370 |
| 24 | 403 |
| 25 | 437 |
| 26 | 473 |
| 27 | 510 |
| 28 | 549 |
| 29 | 589 |
| 30 | 631 |
| 31 | 674 |
| 32 | 718 |
| 33 | 764 |
| 34 | 811 |
| 35 | 860 |
| 36 | 910 |
| 37 | 961 |
| 38 | 1014 |
| 39 | 1068 |
| 40 | 1124 |
| 41 | 1181 |
| 42 | 1239 |
| 43 | 1299 |
| 44 | 1360 |
| 45 | 1423 |
| 46 | 1487 |
| 47 | 1553 |
| 48 | 1620 |
| 49 | 1688 |
[1,3,6,11,17,25,34,44,56,69,84,100,117,136,156, 178,201,226,252,279,308,338,370,403,437,473,510, 549,589,631,674,718,764,811,860,910,961,1014,1068, 1124,1181,1239,1299,1360,1423,1487,1553,1620,1688] |