| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 6 |
| 5 | 9 |
| 6 | 12 |
| 7 | 16 |
| 8 | 20 |
| 9 | 23 |
| 10 | 28 |
| 11 | 32 |
| 12 | 37 |
| 13 | 40 |
| 14 | 46 |
| 15 | 51 |
| 16 | 56 |
| 17 | 60 |
| 18 | 65 |
| 19 | 71 |
| 20 | 77 |
| 21 | 81 |
| 22 | 87 |
| 23 | 91 |
| 24 | 99 |
| 25 | 103 |
| 26 | 109 |
| 27 | 115 |
| 28 | 121 |
| 29 | 125 |
| 30 | 133 |
| 31 | 138 |
| 32 | 145 |
| 33 | 150 |
| 34 | 156 |
| 35 | 163 |
| 36 | 169 |
| 37 | 174 |
| 38 | 181 |
| 39 | 187 |
| 40 | 196 |
| 41 | 199 |
| 42 | 207 |
| 43 | 212 |
| 44 | 220 |
| 45 | 226 |
| 46 | 232 |
| 47 | 239 |
| 48 | 247 |
| 49 | 252 |
| 50 | 259 |
| 51 | 265 |
| 52 | 274 |
| 53 | 277 |
| 54 | 287 |
| 55 | 293 |
| 56 | 301 |
| 57 | 307 |
[0,1,3,6,9,12,16,20,23,28,32,37,40,46,51,56,60,65, 71,77,81,87,91,99,103,109,115,121,125,133,138,145, 150,156,163,169,174,181,187,196,199,207,212,220, 226,232,239,247,252,259,265,274,277,287,293,301, 307] |