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 | 17 |
| 5 | 31 |
| 6 | 49 |
| 7 | 103 |
| 8 | 193 |
| 9 | 327 |
| 10 | 641 |
| 11 | 1207 |
| 12 | 2129 |
| 13 | 4039 |
| 14 | 7585 |
| 15 | 13687 |
| 16 | 25585 |
| 17 | 47847 |
| 18 | 87425 |
| 19 | 162391 |
| 20 | 302609 |
| 21 | 556615 |
| 22 | 1031329 |
| 23 | 1916983 |
| 24 | 3538225 |
| 25 | 6550311 |
| 26 | 12155585 |
| 27 | 22474519 |
| 28 | 41599313 |
| 29 | 77121031 |
| 30 | 142707937 |
| 31 | 264156151 |
| 32 | 489441649 |
| 33 | 906031335 |