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 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 5 |
| 6 | 11 |
| 7 | 22 |
| 8 | 47 |
| 9 | 93 |
| 10 | 193 |
| 11 | 386 |
| 12 | 793 |
| 13 | 1586 |
| 14 | 3238 |
| 15 | 6476 |
| 16 | 13167 |
| 17 | 26333 |
| 18 | 53381 |
| 19 | 106762 |
| 20 | 215955 |
| 21 | 431910 |
| 22 | 872218 |
| 23 | 1744436 |
| 24 | 3518265 |
| 25 | 7036530 |
| 26 | 14177066 |
| 27 | 28354132 |
| 28 | 57079714 |
| 29 | 114159428 |
| 30 | 229656076 |
| 31 | 459312152 |
| 32 | 923471727 |
| 33 | 1846943453 |
| 34 | 3711565741 |
| 35 | 7423131482 |