This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 15 |
| 6 | 17 |
| 7 | 21 |
| 8 | 51 |
| 9 | 63 |
| 10 | 65 |
| 11 | 85 |
| 12 | 195 |
| 13 | 255 |
| 14 | 257 |
| 15 | 273 |
| 16 | 325 |
| 17 | 341 |
| 18 | 771 |
| 19 | 819 |
| 20 | 975 |
| 21 | 1023 |
| 22 | 1025 |
| 23 | 1105 |
| 24 | 1285 |
| 25 | 1365 |
| 26 | 3075 |
| 27 | 3315 |
| 28 | 3855 |
| 29 | 4095 |
| 30 | 4097 |
| 31 | 4161 |
| 32 | 4369 |
| 33 | 4433 |
| 34 | 5125 |
| 35 | 5189 |
| 36 | 5397 |
| 37 | 5461 |
| 38 | 12291 |
| 39 | 12483 |
| 40 | 13107 |
| 41 | 13299 |
| 42 | 15375 |
| 43 | 15567 |
| 44 | 16191 |
| 45 | 16383 |
| 46 | 16385 |
| 47 | 16705 |