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) |
|---|---|
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 5 |
| 6 | 8 |
| 7 | 21 |
| 8 | 34 |
| 9 | 89 |
| 10 | 377 |
| 11 | 610 |
| 12 | 2584 |
| 13 | 6765 |
| 14 | 10946 |
| 15 | 28657 |
| 16 | 121393 |
| 17 | 514229 |
| 18 | 832040 |
| 19 | 3524578 |
| 20 | 9227465 |
| 21 | 14930352 |
| 22 | 63245986 |
| 23 | 165580141 |
| 24 | 701408733 |
| 25 | 4807526976 |
| 26 | 12586269025 |
| 27 | 20365011074 |
| 28 | 53316291173 |
| 29 | 86267571272 |
| 30 | 225851433717 |