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 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 20 |
| 6 | 26 |
| 7 | 28 |
| 8 | 29 |
| 9 | 39 |
| 10 | 41 |
| 11 | 129 |
| 12 | 430 |
| 13 | 526 |
| 14 | 591 |
| 15 | 655 |
| 16 | 731 |
| 17 | 1388 |
| 18 | 1622 |
| 19 | 2249 |
| 20 | 3734 |
| 21 | 6841 |
| 22 | 18752 |
| 23 | 18772 |
| 24 | 21332 |
| 25 | 35017 |
| 26 | 37337 |
| 27 | 53173 |
| 28 | 105557 |
| 29 | 113377 |
| 30 | 124753 |
| 31 | 419029 |
| 32 | 614153 |
| 33 | 824149 |
| 34 | 829333 |
| 35 | 2192923 |
| 36 | 2369654 |
| 37 | 2538915 |
| 38 | 3059853 |
| 39 | 3388115 |
| 40 | 3479244 |
| 41 | 3557183 |