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 | 4 |
| 2 | 5 |
| 3 | 6 |
| 4 | 8 |
| 5 | 13 |
| 6 | 14 |
| 7 | 25 |
| 8 | 30 |
| 9 | 44 |
| 10 | 58 |
| 11 | 383 |
| 12 | 455 |
| 13 | 463 |
| 14 | 504 |
| 15 | 511 |
| 16 | 1358 |
| 17 | 2293 |
| 18 | 4096 |
| 19 | 4374 |
| 20 | 8664 |
| 21 | 13676 |
| 22 | 23993 |
| 23 | 84134 |
| 24 | 90155 |
| 25 | 115794 |
| 26 | 127858 |