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 | 37 |
| 3 | 41 |
| 4 | 67 |
| 5 | 97 |
| 6 | 131 |
| 7 | 193 |
| 8 | 577 |
| 9 | 1033 |
| 10 | 1153 |
| 11 | 2053 |
| 12 | 4129 |
| 13 | 8209 |
| 14 | 18433 |
| 15 | 32771 |
| 16 | 32801 |
| 17 | 32833 |
| 18 | 65539 |
| 19 | 133121 |
| 20 | 525313 |
| 21 | 557057 |
| 22 | 1049089 |
| 23 | 4194433 |
| 24 | 167772161 |
| 25 | 268435459 |