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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 11 |
| 6 | 13 |
| 7 | 4673 |
| 8 | 5153 |
| 9 | 8513 |
| 10 | 16673 |
| 11 | 17895719 |
| 12 | 17899799 |
| 13 | 17985809 |
| 14 | 18288929 |
| 15 | 34697489 |
| 16 | 40964369 |
| 17 | 118563089 |
| 18 | 286337041 |
| 19 | 286359841 |
| 20 | 293675281 |
| 21 | 403775761 |
| 22 | 554766721 |
| 23 | 554795281 |
| 24 | 73303933201 |
| 25 | 74109227281 |
| 26 | 1172812415521 |
| 27 | 1172812443937 |
| 28 | 1172812468507 |