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 | 1 |
| 2 | 11 |
| 3 | 18 |
| 4 | 23 |
| 5 | 25 |
| 6 | 37 |
| 7 | 68 |
| 8 | 113 |
| 9 | 115 |
| 10 | 179 |
| 11 | 229 |
| 12 | 421 |
| 13 | 545 |
| 14 | 1129 |
| 15 | 1451 |
| 16 | 1481 |
| 17 | 1847 |
| 18 | 1987 |
| 19 | 3099 |
| 20 | 3329 |
| 21 | 4391 |