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 | 4 |
| 3 | 7 |
| 4 | 12 |
| 5 | 22 |
| 6 | 38 |
| 7 | 66 |
| 8 | 114 |
| 9 | 198 |
| 10 | 343 |
| 11 | 595 |
| 12 | 1030 |
| 13 | 1785 |
| 14 | 3092 |
| 15 | 5357 |
| 16 | 9278 |
| 17 | 16071 |
| 18 | 27835 |
| 19 | 48213 |
| 20 | 83507 |
| 21 | 144639 |
| 22 | 250523 |
| 23 | 433919 |
| 24 | 751571 |
| 25 | 1301759 |
| 26 | 2254713 |
| 27 | 3905277 |
| 28 | 6764139 |
| 29 | 11715833 |
| 30 | 20292418 |
| 31 | 35147500 |
| 32 | 60877256 |
| 33 | 105442501 |
| 34 | 182631769 |
| 35 | 316327504 |
| 36 | 547895309 |
| 37 | 948982513 |
| 38 | 1643685929 |
| 39 | 2846947541 |
| 40 | 4931057788 |