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 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 7 |
| 6 | 14 |
| 7 | 30 |
| 8 | 62 |
| 9 | 131 |
| 10 | 287 |
| 11 | 629 |
| 12 | 1385 |
| 13 | 3096 |
| 14 | 6967 |
| 15 | 15735 |
| 16 | 35782 |
| 17 | 81823 |
| 18 | 187781 |
| 19 | 432689 |
| 20 | 1000919 |
| 21 | 2322584 |
| 22 | 5405094 |
| 23 | 12614260 |
| 24 | 29512587 |
| 25 | 69205602 |
| 26 | 162634994 |
| 27 | 382961435 |
| 28 | 903431963 |
| 29 | 2134945637 |
| 30 | 5053385429 |
| 31 | 11979405642 |
| 32 | 28438444486 |
| 33 | 67601886687 |