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 | 5 |
| 3 | 17 |
| 4 | 41 |
| 5 | 71 |
| 6 | 311 |
| 7 | 347 |
| 8 | 659 |
| 9 | 2381 |
| 10 | 5879 |
| 11 | 13397 |
| 12 | 18539 |
| 13 | 24419 |
| 14 | 62297 |
| 15 | 187907 |
| 16 | 687521 |
| 17 | 688451 |
| 18 | 850349 |
| 19 | 2868959 |
| 20 | 4869911 |
| 21 | 9923987 |
| 22 | 14656517 |
| 23 | 17382479 |
| 24 | 30752231 |
| 25 | 32822369 |
| 26 | 96894041 |
| 27 | 136283429 |
| 28 | 234966929 |
| 29 | 248641037 |
| 30 | 255949949 |