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 | 4 |
| 3 | 8 |
| 4 | 15 |
| 5 | 28 |
| 6 | 49 |
| 7 | 84 |
| 8 | 140 |
| 9 | 229 |
| 10 | 367 |
| 11 | 577 |
| 12 | 895 |
| 13 | 1368 |
| 14 | 2064 |
| 15 | 3080 |
| 16 | 4547 |
| 17 | 6642 |
| 18 | 9627 |
| 19 | 13825 |
| 20 | 19704 |
| 21 | 27868 |
| 22 | 39164 |
| 23 | 54656 |
| 24 | 75832 |
| 25 | 104584 |