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 | 13 |
| 2 | 97 |
| 3 | 17 |
| 4 | 3041 |
| 5 | 1153 |
| 6 | 769 |
| 7 | 257 |
| 8 | 72222721 |
| 9 | 4043777 |
| 10 | 2330249132033 |
| 11 | 625483777 |
| 12 | 286721 |
| 13 | 14496395542529 |
| 14 | 2752513 |
| 15 | 65537 |
| 16 | 319291393 |
| 17 | 54498164737 |