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 | 15 |
| 3 | 33 |
| 4 | 43 |
| 5 | 61 |
| 6 | 121 |
| 7 | 295 |
| 8 | 315 |
| 9 | 367 |
| 10 | 681 |
| 11 | 771 |
| 12 | 789 |
| 13 | 1485 |
| 14 | 4915 |
| 15 | 5305 |
| 16 | 33649 |
| 17 | 81343 |
| 18 | 85005 |
| 19 | 116307 |
| 20 | 154869 |
| 21 | 230731 |
| 22 | 279591 |
| 23 | 287847 |
| 24 | 329515 |
| 25 | 545353 |
| 26 | 1053481 |