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 | 37 |
| 1 | 257 |
| 2 | 1669 |
| 3 | 22349 |
| 4 | 294001 |
| 5 | 3553267 |
| 6 | 41892163 |
| 7 | 481303351 |