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 | 2 |
| 2 | 5 |
| 3 | 7 |
| 4 | 13 |
| 5 | 17 |
| 6 | 29 |
| 7 | 53 |
| 8 | 89 |
| 9 | 199 |
| 10 | 271 |
| 11 | 349 |
| 12 | 823 |
| 13 | 1747 |
| 14 | 2251 |
| 15 | 2593 |
| 16 | 6569 |
| 17 | 7121 |
| 18 | 27479 |
| 19 | 44129 |
| 20 | 85361 |
| 21 | 115259 |
| 22 | 254731 |
| 23 | 462103 |
| 24 | 903751 |