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 | 0 |
| 1 | 2 |
| 2 | 13 |
| 3 | 31 |
| 4 | 45 |
| 5 | 200 |
| 6 | 854 |
| 7 | 3358 |
| 8 | 4698 |
| 9 | 29324 |
| 10 | 55295 |
| 11 | 263489 |
| 12 | 567993 |
| 13 | 2328803 |