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 | 5 |
| 4 | 17 |
| 5 | 21 |
| 6 | 65 |
| 7 | 71 |
| 8 | 83 |
| 9 | 257 |
| 10 | 273 |
| 11 | 281 |
| 12 | 317 |
| 13 | 1025 |
| 14 | 1055 |
| 15 | 4097 |
| 16 | 4161 |
| 17 | 4193 |
| 18 | 4401 |
| 19 | 5157 |
| 20 | 5179 |
| 21 | 5221 |
| 22 | 16385 |
| 23 | 16511 |
| 24 | 16865 |
| 25 | 17239 |
| 26 | 65537 |
| 27 | 65793 |
| 28 | 65921 |
| 29 | 66753 |
| 30 | 68695 |
| 31 | 69521 |
| 32 | 69777 |
| 33 | 80739 |
| 34 | 82053 |
| 35 | 82171 |
| 36 | 82309 |
| 37 | 82885 |
| 38 | 83301 |
| 39 | 262145 |