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 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 11 |
| 6 | 21 |
| 7 | 42 |
| 8 | 83 |
| 9 | 166 |
| 10 | 331 |
| 11 | 661 |
| 12 | 1322 |
| 13 | 2643 |
| 14 | 5285 |
| 15 | 10569 |
| 16 | 21138 |
| 17 | 42275 |
| 18 | 84550 |
| 19 | 169099 |
| 20 | 338197 |
| 21 | 676394 |
| 22 | 1352787 |
| 23 | 2705573 |
| 24 | 5411146 |
| 25 | 10822291 |
| 26 | 21644582 |
| 27 | 43289163 |
| 28 | 86578325 |
| 29 | 173156650 |
| 30 | 346313299 |
| 31 | 692626597 |
| 32 | 1385253193 |
| 33 | 2770506386 |
| 34 | 5541012771 |
| 35 | 11082025542 |