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 | 3 |
| 2 | 7 |
| 3 | 12 |
| 4 | 24 |
| 5 | 46 |
| 6 | 89 |
| 7 | 171 |
| 8 | 330 |
| 9 | 636 |
| 10 | 1226 |
| 11 | 2363 |
| 12 | 4555 |
| 13 | 8780 |
| 14 | 16924 |
| 15 | 32622 |
| 16 | 62881 |
| 17 | 121207 |
| 18 | 233634 |
| 19 | 450344 |
| 20 | 868066 |
| 21 | 1673251 |
| 22 | 3225295 |
| 23 | 6216956 |
| 24 | 11983568 |
| 25 | 23099070 |
| 26 | 44524889 |
| 27 | 85824483 |
| 28 | 165432010 |
| 29 | 318880452 |
| 30 | 614661834 |
| 31 | 1184798779 |
| 32 | 2283773075 |
| 33 | 4402114140 |
| 34 | 8485347828 |