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 | 10 |
| 2 | 21 |
| 3 | 23 |
| 4 | 34 |
| 5 | 43 |
| 6 | 65 |
| 7 | 76 |
| 8 | 89 |
| 9 | 109 |
| 10 | 111 |
| 11 | 197 |
| 12 | 199 |
| 13 | 241 |
| 14 | 351 |
| 15 | 485 |
| 16 | 769 |
| 17 | 881 |
| 18 | 1079 |
| 19 | 6049 |
| 20 | 19601 |