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 | 11 |
| 1 | 19 |
| 2 | 67 |
| 3 | 13 |
| 4 | 262147 |
| 5 | 13 |
| 6 | 1669 |
| 7 | 13 |
| 8 | 255127 |
| 9 | 13 |
| 10 | 2383 |
| 11 | 13 |
| 12 | 67 |
| 13 | 13 |
| 14 | 32544331 |
| 15 | 13 |
| 16 | 271 |
| 17 | 13 |
| 18 | 4057 |
| 19 | 13 |