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 | 50 |
| 2 | 124 |
| 3 | 311 |
| 4 | 775 |
| 5 | 1895 |
| 6 | 4663 |
| 7 | 11518 |
| 8 | 28446 |
| 9 | 70145 |
| 10 | 172951 |
| 11 | 426630 |
| 12 | 1052487 |
| 13 | 2596184 |
| 14 | 6403675 |
| 15 | 15795627 |
| 16 | 38963018 |
| 17 | 96109484 |
| 18 | 237070048 |
| 19 | 584773118 |
| 20 | 1442444418 |
| 21 | 3558040343 |
| 22 | 8776520278 |
| 23 | 21648797430 |
| 24 | 53400493513 |
| 25 | 131721540000 |