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 | 13 |
| 4 | 37 |
| 5 | 79 |
| 6 | 163 |
| 7 | 349 |
| 8 | 757 |
| 9 | 1567 |
| 10 | 3163 |
| 11 | 6547 |
| 12 | 13099 |
| 13 | 26497 |
| 14 | 52999 |
| 15 | 106273 |
| 16 | 212557 |
| 17 | 426889 |
| 18 | 855427 |
| 19 | 1710853 |
| 20 | 3421903 |
| 21 | 6845869 |
| 22 | 13691767 |
| 23 | 27385087 |
| 24 | 54771007 |
| 25 | 109542907 |
| 26 | 219096259 |
| 27 | 438203677 |
| 28 | 876417229 |
| 29 | 1752875893 |
| 30 | 3505814527 |
| 31 | 7011656629 |
| 32 | 14023322167 |
| 33 | 28046754727 |
| 34 | 56093637367 |