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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 7 |
| 7 | 13 |
| 8 | 25 |
| 9 | 48 |
| 10 | 92 |
| 11 | 176 |
| 12 | 338 |
| 13 | 649 |
| 14 | 1246 |
| 15 | 2392 |
| 16 | 4594 |
| 17 | 8823 |
| 18 | 16945 |
| 19 | 32545 |
| 20 | 62509 |
| 21 | 120060 |
| 22 | 230598 |
| 23 | 442910 |
| 24 | 850701 |
| 25 | 1633948 |
| 26 | 3138339 |
| 27 | 6027842 |
| 28 | 11577747 |
| 29 | 22237515 |
| 30 | 42711863 |
| 31 | 82037200 |
| 32 | 157569867 |
| 33 | 302646401 |
| 34 | 581296715 |
| 35 | 1116503866 |
| 36 | 2144482948 |
| 37 | 4118935248 |
| 38 | 7911290530 |