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 | 17 |
| 2 | 47 |
| 3 | 149 |
| 4 | 2081 |
| 5 | 8231 |
| 6 | 140737488355469 |
| 7 | 300613450595050653169853516389035139504087366260264943450533244356122755214669880763353471793250393988087678029 |