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 | 3 |
| 3 | 7 |
| 4 | 12 |
| 5 | 38 |
| 6 | 69 |
| 7 | 81 |
| 8 | 295 |
| 9 | 552 |
| 10 | 702 |
| 11 | 3098 |
| 12 | 5901 |
| 13 | 7857 |
| 14 | 8559 |
| 15 | 42271 |
| 16 | 81444 |
| 17 | 111618 |
| 18 | 128034 |
| 19 | 726734 |
| 20 | 1411197 |
| 21 | 1971945 |
| 22 | 2339631 |
| 23 | 2467665 |
| 24 | 15366679 |
| 25 | 30006624 |
| 26 | 42508638 |
| 27 | 51627510 |
| 28 | 56434806 |
| 29 | 391888514 |
| 30 | 768410349 |
| 31 | 1099558881 |