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 | 3 |
| 2 | 4 |
| 3 | 7 |
| 4 | 7 |
| 5 | 14 |
| 6 | 14 |
| 7 | 25 |
| 8 | 34 |
| 9 | 55 |
| 10 | 79 |
| 11 | 144 |
| 12 | 225 |
| 13 | 396 |
| 14 | 697 |
| 15 | 1249 |
| 16 | 2251 |
| 17 | 4156 |
| 18 | 7686 |
| 19 | 14369 |
| 20 | 27029 |
| 21 | 51045 |
| 22 | 96910 |
| 23 | 184572 |
| 24 | 352705 |
| 25 | 675415 |
| 26 | 1296892 |
| 27 | 2494126 |
| 28 | 4806079 |
| 29 | 9273533 |
| 30 | 17920861 |
| 31 | 34670851 |
| 32 | 67159132 |
| 33 | 130218377 |
| 34 | 252745388 |
| 35 | 490988774 |