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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 7 |
| 5 | 10 |
| 6 | 14 |
| 7 | 19 |
| 8 | 25 |
| 9 | 31 |
| 10 | 38 |
| 11 | 46 |
| 12 | 55 |
| 13 | 65 |
| 14 | 75 |
| 15 | 86 |
| 16 | 98 |
| 17 | 111 |
| 18 | 125 |
| 19 | 140 |
| 20 | 155 |
| 21 | 171 |
| 22 | 188 |
| 23 | 206 |
| 24 | 225 |
| 25 | 245 |
| 26 | 266 |
| 27 | 287 |
| 28 | 309 |
| 29 | 332 |
| 30 | 356 |
| 31 | 381 |
| 32 | 407 |
| 33 | 434 |
| 34 | 462 |
| 35 | 490 |
| 36 | 519 |
| 37 | 549 |
| 38 | 580 |
| 39 | 612 |
| 40 | 645 |
| 41 | 679 |
| 42 | 714 |
| 43 | 750 |
| 44 | 786 |
| 45 | 823 |
| 46 | 861 |
| 47 | 900 |
| 48 | 940 |
| 49 | 981 |
| 50 | 1023 |
| 51 | 1066 |
| 52 | 1110 |
| 53 | 1155 |
[1,2,4,7,10,14,19,25,31,38,46,55,65,75,86,98,111, 125,140,155,171,188,206,225,245,266,287,309,332, 356,381,407,434,462,490,519,549,580,612,645,679, 714,750,786,823,861,900,940,981,1023,1066,1110, 1155] |