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 | 7 |
| 2 | 45 |
| 3 | 303 |
| 4 | 2202 |
| 5 | 17185 |
| 6 | 141444 |
| 7 | 1200975 |
| 8 | 10448345 |
| 9 | 92435171 |
| 10 | 828797351 |
| 11 | 7511268020 |
| 12 | 68680339342 |