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 | 11 |
| 4 | 28 |
| 5 | 65 |
| 6 | 147 |
| 7 | 321 |
| 8 | 678 |
| 9 | 1382 |
| 10 | 2738 |
| 11 | 5289 |
| 12 | 9985 |
| 13 | 18452 |
| 14 | 33455 |
| 15 | 59616 |
| 16 | 104556 |
| 17 | 180690 |
| 18 | 308058 |
| 19 | 518648 |
| 20 | 863037 |
| 21 | 1420480 |
| 22 | 2314170 |
| 23 | 3734063 |
| 24 | 5970888 |
| 25 | 9466452 |
| 26 | 14887746 |
| 27 | 23235296 |
| 28 | 36000876 |
| 29 | 55395893 |
| 30 | 84680624 |
| 31 | 128636339 |
| 32 | 194239572 |