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 | 72 |
| 3 | 331 |
| 4 | 1169 |
| 5 | 3419 |
| 6 | 8751 |
| 7 | 20198 |
| 8 | 42950 |
| 9 | 85411 |
| 10 | 160626 |
| 11 | 288126 |
| 12 | 496303 |
| 13 | 825326 |
| 14 | 1330766 |
| 15 | 2088013 |
| 16 | 3197529 |
| 17 | 4791093 |
| 18 | 7039193 |
| 19 | 10159603 |
| 20 | 14427309 |
| 21 | 20186026 |
| 22 | 27861175 |
| 23 | 37974797 |
| 24 | 51162295 |
| 25 | 68191379 |
| 26 | 89983125 |
| 27 | 117635672 |