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 | 13 |
| 3 | 15 |
| 4 | 43 |
| 5 | 58 |
| 6 | 391 |
| 7 | 449 |
| 8 | 1289 |
| 9 | 1738 |
| 10 | 11717 |
| 11 | 13455 |
| 12 | 38627 |
| 13 | 52082 |
| 14 | 351119 |
| 15 | 403201 |
| 16 | 1157521 |
| 17 | 1560722 |
| 18 | 10521853 |
| 19 | 12082575 |
| 20 | 34687003 |
| 21 | 46769578 |
| 22 | 315304471 |
| 23 | 362074049 |
| 24 | 1039452569 |
| 25 | 1401526618 |
| 26 | 9448612277 |
| 27 | 10850138895 |