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 | 24 |
| 2 | 36 |
| 3 | 56 |
| 4 | 90 |
| 5 | 148 |
| 6 | 252 |
| 7 | 435 |
| 8 | 765 |
| 9 | 1362 |
| 10 | 2455 |
| 11 | 4466 |
| 12 | 8190 |
| 13 | 15121 |
| 14 | 28085 |
| 15 | 52427 |
| 16 | 98302 |
| 17 | 185041 |
| 18 | 349524 |
| 19 | 662257 |
| 20 | 1258290 |
| 21 | 2396744 |
| 22 | 4575603 |
| 23 | 8753329 |
| 24 | 16777215 |
| 25 | 32212253 |
| 26 | 61946642 |
| 27 | 119304646 |
| 28 | 230087532 |