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 | 1 |
| 5 | 3 |
| 6 | 6 |
| 7 | 12 |
| 8 | 24 |
| 9 | 47 |
| 10 | 94 |
| 11 | 188 |
| 12 | 374 |
| 13 | 746 |
| 14 | 1490 |
| 15 | 2978 |
| 16 | 5958 |
| 17 | 11916 |
| 18 | 23832 |
| 19 | 47664 |
| 20 | 95326 |
| 21 | 190652 |
| 22 | 381304 |
| 23 | 762604 |
| 24 | 1525204 |
| 25 | 3050404 |
| 26 | 6100804 |
| 27 | 12201612 |
| 28 | 24403224 |
| 29 | 48806448 |
| 30 | 97612896 |
| 31 | 195225788 |
| 32 | 390451576 |
| 33 | 780903152 |
| 34 | 1561806296 |