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 | 1 |
| 2 | 15 |
| 3 | 1313 |
| 4 | 718483 |
| 5 | 2885285507 |
| 6 | 84130295708483 |
| 7 | 17291702408190208843 |
| 8 | 25164969879062538935257597 |
| 9 | 260198076410481338310694223844235 |
| 10 | 19101564590400937625024602276497985649471 |