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 | 3 |
| 3 | 17 |
| 4 | 54 |
| 5 | 179 |
| 6 | 412 |
| 7 | 591 |
| 8 | 12823 |
| 9 | 13414 |
| 10 | 26237 |
| 11 | 39651 |
| 12 | 184841 |
| 13 | 409333 |
| 14 | 594174 |
| 15 | 28929685 |
| 16 | 2054601809 |
| 17 | 14411142348 |
| 18 | 16465744157 |
| 19 | 30876886505 |
| 20 | 294357722702 |
| 21 | 325234609207 |
| 22 | 944826941116 |
| 23 | 1270061550323 |
| 24 | 14915503994669 |
| 25 | 16185565544992 |