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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 6 |
| 5 | 8 |
| 6 | 9 |
| 7 | 15 |
| 8 | 18 |
| 9 | 23 |
| 10 | 53 |
| 11 | 114 |
| 12 | 194 |
| 13 | 564 |
| 14 | 575 |
| 15 | 585 |
| 16 | 2594 |
| 17 | 3143 |
| 18 | 4578 |
| 19 | 4970 |
| 20 | 9261 |
| 21 | 11508 |
| 22 | 13298 |
| 23 | 30018 |
| 24 | 54993 |
| 25 | 198476 |