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 | 1 |
| 2 | 14197 |
| 3 | 9245913139 |
| 4 | 64146409058631061 |
| 5 | 2592491557886605293297751 |
| 6 | 427593510370812774462812710051387 |
| 7 | 227328735342370296661661894900118524516359 |