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 | 0 |
| 2 | 3 |
| 3 | 74 |
| 4 | 1114 |
| 5 | 13437 |
| 6 | 151311 |
| 7 | 1642197 |
| 8 | 17405273 |
| 9 | 181925434 |
| 10 | 1883327626 |
| 11 | 19364371468 |
| 12 | 198115934511 |
| 13 | 2019328584101 |