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 | 108 |
| 3 | 9284 |
| 4 | 2817548 |
| 5 | 3159954052 |
| 6 | 13377149358556 |
| 7 | 217602949665911156 |
| 8 | 13760950074226562086140 |
| 9 | 3411379570274317633099847884 |
| 10 | 3335382860394625859139269051079788 |