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 | 48 |
| 2 | 1528 |
| 3 | 85976 |
| 4 | 7699384 |
| 5 | 895747208 |
| 6 | 121920870264 |
| 7 | 17786755869336 |
| 8 | 2703839577994464 |
| 9 | 421768649710297424 |