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 | 5 |
| 2 | 11 |
| 3 | 93 |
| 4 | 193 |
| 5 | 793 |
| 6 | 1619 |
| 7 | 26333 |
| 8 | 53381 |
| 9 | 215955 |
| 10 | 436109 |
| 11 | 3518265 |
| 12 | 7088533 |
| 13 | 28539857 |
| 14 | 57414019 |
| 15 | 1846943453 |
| 16 | 3711565741 |
| 17 | 14911085359 |
| 18 | 29941580393 |
| 19 | 240416274739 |
| 20 | 482473579583 |
| 21 | 1936010885087 |
| 22 | 3883457090629 |
| 23 | 62306843256889 |