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 | 83 |
| 2 | 97 |
| 3 | 337 |
| 4 | 65617 |
| 5 | 4294967377 |
| 6 | 18446744073709551697 |
| 7 | 340282366920938463463374607431768211537 |