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 | 7 |
| 2 | 13 |
| 3 | 41 |
| 4 | 113 |
| 5 | 97 |
| 6 | 193 |
| 7 | 641 |
| 8 | 769 |
| 9 | 11777 |
| 10 | 13313 |
| 11 | 59393 |
| 12 | 12289 |
| 13 | 40961 |
| 14 | 114689 |
| 15 | 163841 |
| 16 | 2424833 |
| 17 | 6946817 |
| 18 | 786433 |
| 19 | 5767169 |
| 20 | 7340033 |
| 21 | 23068673 |
| 22 | 155189249 |
| 23 | 595591169 |
| 24 | 1224736769 |
| 25 | 167772161 |
| 26 | 469762049 |
| 27 | 2281701377 |
| 28 | 3489660929 |
| 29 | 12348030977 |