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 | 13 |
| 4 | 31 |
| 5 | 43 |
| 6 | 73 |
| 7 | 157 |
| 8 | 211 |
| 9 | 241 |
| 10 | 1093 |
| 11 | 2801 |
| 12 | 19531 |
| 13 | 22621 |
| 14 | 30941 |
| 15 | 55987 |
| 16 | 88741 |
| 17 | 245411 |
| 18 | 292561 |
| 19 | 346201 |
| 20 | 797161 |
| 21 | 5229043 |
| 22 | 8108731 |
| 23 | 12207031 |
| 24 | 25646167 |
| 25 | 305175781 |
| 26 | 321272407 |
| 27 | 917087137 |
| 28 | 16148168401 |
| 29 | 2141993519227 |
| 30 | 10778947368421 |
| 31 | 17513875027111 |
| 32 | 610851724137931 |
| 33 | 50544702849929377 |