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 | 18731 |
| 3 | 683783 |
| 4 | 98303927 |
| 5 | 60335249959 |
| 6 | 1169769749219 |
| 7 | 3945769040699039 |
| 8 | 159067808851610657 |
| 9 | 6919940122097246597 |