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 | 2 |
| 3 | 6 |
| 4 | 14 |
| 5 | 36 |
| 6 | 122 |
| 7 | 162 |
| 8 | 450 |
| 9 | 2364 |
| 10 | 4760 |
| 11 | 4818 |
| 12 | 8541 |
| 13 | 19570 |
| 14 | 44514 |
| 15 | 47448 |
| 16 | 114885 |
| 17 | 378956 |
| 18 | 384324 |
| 19 | 542246 |
| 20 | 1275572 |
| 21 | 1385164 |
| 22 | 3865640 |
| 23 | 4514352 |
| 24 | 5226312 |
| 25 | 6271502 |
| 26 | 12817002 |
| 27 | 18665964 |
| 28 | 19815336 |
| 29 | 33506604 |
| 30 | 42712210 |