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 | 21 |
| 5 | 34 |
| 6 | 89 |
| 7 | 377 |
| 8 | 610 |
| 9 | 2584 |
| 10 | 17711 |
| 11 | 75025 |
| 12 | 121393 |
| 13 | 196418 |
| 14 | 514229 |
| 15 | 832040 |
| 16 | 1346269 |
| 17 | 5702887 |
| 18 | 63245986 |
| 19 | 165580141 |
| 20 | 433494437 |
| 21 | 1134903170 |
| 22 | 2971215073 |
| 23 | 20365011074 |
| 24 | 53316291173 |
| 25 | 86267571272 |
| 26 | 591286729879 |
| 27 | 2504730781961 |