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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 4 |
| 7 | 6 |
| 8 | 11 |
| 9 | 18 |
| 10 | 36 |
| 11 | 64 |
| 12 | 127 |
| 13 | 241 |
| 14 | 480 |
| 15 | 935 |
| 16 | 1868 |
| 17 | 3688 |
| 18 | 7373 |
| 19 | 14655 |
| 20 | 29305 |
| 21 | 58432 |
| 22 | 116859 |
| 23 | 233367 |
| 24 | 466727 |
| 25 | 932761 |
| 26 | 1865513 |
| 27 | 3729648 |
| 28 | 7459286 |
| 29 | 14915826 |
| 30 | 29831640 |
| 31 | 59657802 |
| 32 | 119315589 |
| 33 | 238620236 |
| 34 | 477240456 |
| 35 | 954459044 |
| 36 | 1908918069 |
| 37 | 3817792423 |