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 | 1550860550 |
| 2 | 2319548096 |
| 3 | 66072609790 |
| 4 | 114141404156 |
| 5 | 232374697216 |