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 | 2 |
| 2 | 15 |
| 3 | 68 |
| 4 | 363 |
| 5 | 2084 |
| 6 | 13567 |
| 7 | 95164 |
| 8 | 705036 |
| 9 | 5444255 |
| 10 | 43211106 |
| 11 | 351904307 |
| 12 | 2921904565 |