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 | 95295817 |
| 2 | 124035913 |
| 3 | 749931337 |
| 4 | 4275383113 |
| 5 | 47268697363953913 |