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) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 8 |
| 5 | 15 |
| 6 | 29 |
| 7 | 50 |
| 8 | 103 |
| 9 | 164 |
| 10 | 417 |
| 11 | 649 |
| 12 | 1324 |
| 13 | 2684 |
| 14 | 5348 |
| 15 | 10226 |
| 16 | 21298 |
| 17 | 41538 |
| 18 | 84652 |
| 19 | 165034 |
| 20 | 322262 |
| 21 | 646648 |
| 22 | 1283556 |
| 23 | 2584860 |
| 24 | 5163368 |
| 25 | 10271638 |
| 26 | 20566708 |
| 27 | 40308350 |
| 28 | 80758553 |
| 29 | 161522919 |
| 30 | 322519008 |
| 31 | 637135132 |