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 | 315570551 |
| 2 | 782252257 |
| 3 | 773753161 |
| 4 | 123884603 |
| 5 | 447839221 |
| 6 | 213398077 |
| 7 | 122895607 |
| 8 | 581820269 |
| 9 | 552348757 |
| 10 | 146799281 |
| 11 | 751532081 |
| 12 | 913558771 |
| 13 | 258833999 |
| 14 | 987122813 |
| 15 | 263792951 |
| 16 | 295182227 |
| 17 | 784294843 |
| 18 | 135287693 |
| 19 | 876938669 |
| 20 | 938669857 |
| 21 | 996014807 |