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 | 10 |
| 2 | 76 |
| 3 | 369 |
| 4 | 1385 |
| 5 | 4298 |
| 6 | 11654 |
| 7 | 28434 |
| 8 | 63768 |
| 9 | 133440 |
| 10 | 263529 |
| 11 | 495412 |
| 12 | 892644 |
| 13 | 1550012 |
| 14 | 2605342 |
| 15 | 4254753 |
| 16 | 6771752 |
| 17 | 10531080 |
| 18 | 16038303 |
| 19 | 23965659 |
| 20 | 35195450 |
| 21 | 50872227 |
| 22 | 72464493 |
| 23 | 101837746 |
| 24 | 141340075 |
| 25 | 193902062 |
| 26 | 263152095 |
| 27 | 353549942 |