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 | 11 |
| 2 | 341 |
| 3 | 13981 |
| 4 | 852841 |
| 5 | 60551711 |
| 6 | 6115722811 |
| 7 | 801159688241 |
| 8 | 120975112924391 |
| 9 | 21896495439314771 |
| 10 | 4182230628909121261 |
| 11 | 882450662699824586071 |
| 12 | 212670609710657725243111 |
| 13 | 53380323037375089036020861 |