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 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 7 |
| 6 | 13 |
| 7 | 25 |
| 8 | 43 |
| 9 | 83 |
| 10 | 157 |
| 11 | 296 |
| 12 | 564 |
| 13 | 1083 |
| 14 | 2077 |
| 15 | 4006 |
| 16 | 7733 |
| 17 | 14968 |
| 18 | 29044 |
| 19 | 56447 |
| 20 | 109864 |
| 21 | 214197 |
| 22 | 418080 |
| 23 | 816907 |
| 24 | 1598040 |
| 25 | 3129063 |
| 26 | 6132106 |
| 27 | 12027122 |
| 28 | 23606527 |
| 29 | 46366165 |
| 30 | 91127332 |
| 31 | 179207074 |
| 32 | 352615528 |
| 33 | 694182554 |
| 34 | 1367278759 |