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 | 171472673 |
| 3 | 343808687 |
| 4 | 1364225981 |
| 5 | 1469999801 |
| 6 | 1871684753 |
| 7 | 2110769237 |
| 8 | 2227044401 |
| 9 | 2411201729 |
| 10 | 2485782361 |
| 11 | 2545607453 |
| 12 | 3795488227 |
| 13 | 3946237717 |
| 14 | 4213334953 |
| 15 | 4395443513 |
| 16 | 5308651577 |
| 17 | 5770033901 |
| 18 | 5832097819 |
| 19 | 6385775491 |
| 20 | 6694883219 |
| 21 | 7064806421 |
| 22 | 7235208829 |