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 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 9 |
| 6 | 13 |
| 7 | 15 |
| 8 | 17 |
| 9 | 19 |
| 10 | 35 |
| 11 | 37 |
| 12 | 39 |
| 13 | 57 |
| 14 | 59 |
| 15 | 79 |
| 16 | 135 |
| 17 | 137 |
| 18 | 139 |
| 19 | 157 |
| 20 | 159 |
| 21 | 179 |
| 22 | 357 |
| 23 | 359 |
| 24 | 379 |
| 25 | 579 |
| 26 | 1357 |
| 27 | 1359 |
| 28 | 1379 |
| 29 | 1579 |
| 30 | 3579 |
| 31 | 13579 |