| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 4 |
| 3 | 7 |
| 4 | 10 |
| 5 | 15 |
| 6 | 20 |
| 7 | 27 |
| 8 | 34 |
| 9 | 43 |
| 10 | 52 |
| 11 | 63 |
| 12 | 74 |
| 13 | 87 |
| 14 | 100 |
| 15 | 115 |
| 16 | 130 |
| 17 | 147 |
| 18 | 164 |
| 19 | 183 |
| 20 | 202 |
| 21 | 223 |
| 22 | 244 |
| 23 | 267 |
| 24 | 290 |
| 25 | 315 |
| 26 | 340 |
| 27 | 367 |
| 28 | 394 |
| 29 | 423 |
| 30 | 452 |
| 31 | 483 |
| 32 | 514 |
| 33 | 547 |
| 34 | 580 |
| 35 | 615 |
| 36 | 650 |
| 37 | 687 |
| 38 | 724 |
| 39 | 763 |
| 40 | 802 |
| 41 | 843 |
| 42 | 884 |
| 43 | 927 |
| 44 | 970 |
| 45 | 1015 |
| 46 | 1060 |
| 47 | 1107 |
| 48 | 1154 |
| 49 | 1203 |
| 50 | 1252 |
| 51 | 1303 |
| 52 | 1354 |
| 53 | 1407 |
[1,3,4,7,10,15,20,27,34,43,52,63,74,87,100,115, 130,147,164,183,202,223,244,267,290,315,340,367, 394,423,452,483,514,547,580,615,650,687,724,763, 802,843,884,927,970,1015,1060,1107,1154,1203,1252, 1303,1354,1407] |