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 | 5 |
| 3 | 16 |
| 4 | 41 |
| 5 | 92 |
| 6 | 190 |
| 7 | 372 |
| 8 | 703 |
| 9 | 1298 |
| 10 | 2361 |
| 11 | 4255 |
| 12 | 7628 |
| 13 | 13638 |
| 14 | 24357 |
| 15 | 43496 |
| 16 | 77704 |
| 17 | 138899 |
| 18 | 248450 |
| 19 | 444678 |
| 20 | 796314 |
| 21 | 1426644 |
| 22 | 2556825 |
| 23 | 4583600 |
| 24 | 8218728 |
| 25 | 14739136 |
| 26 | 26435727 |
| 27 | 47418602 |
| 28 | 85061737 |
| 29 | 152594941 |