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 | 7 |
| 4 | 11 |
| 5 | 16 |
| 6 | 28 |
| 7 | 49 |
| 8 | 81 |
| 9 | 126 |
| 10 | 246 |
| 11 | 477 |
| 12 | 861 |
| 13 | 1446 |
| 14 | 3126 |
| 15 | 6591 |
| 16 | 12735 |
| 17 | 22680 |
| 18 | 52920 |
| 19 | 118755 |
| 20 | 241635 |
| 21 | 450480 |
| 22 | 1115760 |
| 23 | 2629965 |
| 24 | 5579085 |
| 25 | 10800210 |
| 26 | 28097490 |
| 27 | 68981025 |
| 28 | 151556385 |
| 29 | 302969010 |
| 30 | 821887410 |
| 31 | 2089276995 |
| 32 | 4731688515 |