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 | 7 |
| 2 | 364 |
| 3 | 48229636 |
| 4 | 112186849649044142700364 |
| 5 | 1411971263214164889494039458947084336929208169473485667118006013929636 |