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 | 173 |
| 2 | 233 |
| 3 | 1193 |
| 4 | 16553 |
| 5 | 262313 |
| 6 | 67109033 |
| 7 | 1073741993 |
| 8 | 4611686018427388073 |
| 9 | 73786976294838206633 |
| 10 | 19807040628566084398385987753 |
| 11 | 1361129467683753853853498429727072845993 |