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 | 5 |
| 2 | 7 |
| 3 | 11 |
| 4 | 77 |
| 5 | 161 |
| 6 | 707 |
| 7 | 5555 |
| 8 | 16261 |
| 9 | 50405 |
| 10 | 53135 |
| 11 | 7570757 |
| 12 | 11988911 |
| 13 | 16100161 |
| 14 | 16544561 |
| 15 | 162626261 |
| 16 | 502858205 |
| 17 | 758919857 |
| 18 | 793464397 |
| 19 | 11092829011 |
| 20 | 11539593511 |
| 21 | 5560873780655 |
| 22 | 7424090904247 |
| 23 | 7702753572077 |
| 24 | 16515222251561 |
| 25 | 57293477439275 |
| 26 | 7246424554246427 |