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 | 1 |
| 1 | 11 |
| 2 | 249 |
| 3 | 8747 |
| 4 | 369241 |
| 5 | 17110731 |
| 6 | 840221217 |
| 7 | 42944901219 |
| 8 | 2260581606657 |
| 9 | 121714776747971 |
| 10 | 6671749658197129 |
| 11 | 371062413164972955 |
| 12 | 20887218937200347281 |
| 13 | 1187720356043817041843 |
| 14 | 68124474120573747125529 |