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) |
|---|---|
| 0 | 4 |
| 1 | 5 |
| 2 | 9 |
| 3 | 23 |
| 4 | 32 |
| 5 | 55 |
| 6 | 472 |
| 7 | 527 |
| 8 | 999 |
| 9 | 2525 |
| 10 | 3524 |
| 11 | 6049 |
| 12 | 51916 |
| 13 | 57965 |
| 14 | 109881 |
| 15 | 277727 |
| 16 | 387608 |
| 17 | 665335 |
| 18 | 5710288 |
| 19 | 6375623 |
| 20 | 12085911 |
| 21 | 30547445 |
| 22 | 42633356 |
| 23 | 73180801 |
| 24 | 628079764 |
| 25 | 701260565 |
| 26 | 1329340329 |
| 27 | 3359941223 |