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 | 1531398 |
| 2 | 114009582 |
| 3 | 940084647 |
| 4 | 4206644978 |
| 5 | 7962908038 |
| 6 | 20293639091 |
| 7 | 41947594698 |