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 | 4 |
| 2 | 160 |
| 3 | 13683 |
| 4 | 1334973 |
| 5 | 137489538 |
| 6 | 14587480744 |
| 7 | 1597855917875 |
| 8 | 182011677068828 |
| 9 | 21714188491890254 |
| 10 | 2721720866571310952 |
| 11 | 357937736330145145387 |