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 | 5 |
| 3 | 8 |
| 4 | 15 |
| 5 | 26 |
| 6 | 49 |
| 7 | 92 |
| 8 | 179 |
| 9 | 350 |
| 10 | 693 |
| 11 | 1376 |
| 12 | 2743 |
| 13 | 5474 |
| 14 | 10937 |
| 15 | 21860 |
| 16 | 43707 |
| 17 | 87398 |
| 18 | 174781 |
| 19 | 349544 |
| 20 | 699071 |
| 21 | 1398122 |
| 22 | 2796225 |
| 23 | 5592428 |
| 24 | 11184835 |
| 25 | 22369646 |
| 26 | 44739269 |
| 27 | 89478512 |
| 28 | 178956999 |
| 29 | 357913970 |
| 30 | 715827913 |
| 31 | 1431655796 |
| 32 | 2863311563 |