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) |
|---|---|
| 1 | 3 |
| 2 | 11 |
| 3 | 18 |
| 4 | 39 |
| 5 | 95 |
| 6 | 246 |
| 7 | 687 |
| 8 | 2023 |
| 9 | 6126 |
| 10 | 19571 |
| 11 | 63599 |
| 12 | 209618 |
| 13 | 700539 |
| 14 | 2356511 |
| 15 | 7961506 |
| 16 | 26985119 |
| 17 | 91629471 |
| 18 | 311488830 |
| 19 | 1059693975 |
| 20 | 3606749879 |
| 21 | 12279357318 |
| 22 | 41813315995 |
| 23 | 142397488591 |
| 24 | 484976347386 |
| 25 | 1651802107971 |
| 26 | 5626099528751 |