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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 6 |
| 6 | 8 |
| 7 | 11 |
| 8 | 15 |
| 9 | 20 |
| 10 | 25 |
| 11 | 32 |
| 12 | 40 |
| 13 | 49 |
| 14 | 59 |
| 15 | 71 |
| 16 | 84 |
| 17 | 99 |
| 18 | 116 |
| 19 | 135 |
| 20 | 155 |
| 21 | 178 |
| 22 | 203 |
| 23 | 230 |
| 24 | 259 |
| 25 | 291 |
| 26 | 325 |
| 27 | 362 |
| 28 | 402 |
| 29 | 445 |
| 30 | 490 |
| 31 | 539 |
| 32 | 591 |
| 33 | 646 |
| 34 | 704 |
| 35 | 766 |
| 36 | 831 |
| 37 | 900 |
| 38 | 973 |
| 39 | 1050 |
| 40 | 1130 |
| 41 | 1215 |
| 42 | 1304 |
| 43 | 1397 |
| 44 | 1494 |
| 45 | 1596 |
| 46 | 1702 |
| 47 | 1813 |
| 48 | 1929 |
| 49 | 2050 |
| 50 | 2175 |
[0,1,2,3,4,6,8,11,15,20,25,32,40,49,59,71,84,99, 116,135,155,178,203,230,259,291,325,362,402,445, 490,539,591,646,704,766,831,900,973,1050,1130, 1215,1304,1397,1494,1596,1702,1813,1929,2050,2175] |