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 | 3 |
| 2 | 4 |
| 3 | 5 |
| 4 | 7 |
| 5 | 8 |
| 6 | 14 |
| 7 | 19 |
| 8 | 30 |
| 9 | 37 |
| 10 | 84 |
| 11 | 128 |
| 12 | 469 |
| 13 | 666 |
| 14 | 1262 |
| 15 | 1573 |
| 16 | 2003 |
| 17 | 2210 |
| 18 | 2289 |
| 19 | 4163 |
| 20 | 5553 |
| 21 | 6567 |
| 22 | 8561 |
| 23 | 11230 |
| 24 | 18737 |
| 25 | 35834 |
| 26 | 44259 |
| 27 | 536485 |
| 28 | 727734 |