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 | 312 |
| 2 | 85632 |
| 3 | 22013952 |
| 4 | 1443107438592 |
| 5 | 369435881766912 |
| 6 | 24211351590301335552 |
| 7 | 103986963299971520879061368832 |