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 | 4 |
| 4 | 8 |
| 5 | 13 |
| 6 | 24 |
| 7 | 43 |
| 8 | 78 |
| 9 | 142 |
| 10 | 261 |
| 11 | 479 |
| 12 | 894 |
| 13 | 1674 |
| 14 | 3118 |
| 15 | 5873 |
| 16 | 11102 |
| 17 | 20992 |
| 18 | 39830 |
| 19 | 75906 |
| 20 | 144652 |
| 21 | 276720 |
| 22 | 529865 |
| 23 | 1016535 |
| 24 | 1954167 |
| 25 | 3761091 |
| 26 | 7250277 |
| 27 | 13993031 |
| 28 | 27042169 |
| 29 | 52313384 |
| 30 | 101320082 |
| 31 | 196422988 |
| 32 | 381154209 |
| 33 | 740280217 |
| 34 | 1438969498 |
| 35 | 2799310690 |
| 36 | 5449726356 |