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 | 3 |
| 2 | 5 |
| 3 | 23 |
| 4 | 31 |
| 5 | 73 |
| 6 | 127 |
| 7 | 797 |
| 8 | 1301 |
| 9 | 9851 |
| 10 | 40099 |
| 11 | 345953 |
| 12 | 570181 |
| 13 | 281138239 |
| 14 | 48626519377 |
| 15 | 91840127431010423 |
| 16 | 130050574409983361 |
| 17 | 6162297935619708167 |
| 18 | 604490895403729930283 |
| 19 | 3819342674540204978827 |
| 20 | 20395819231612037821523 |