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) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 14 |
| 3 | -1582 |
| 4 | -7497258 |
| 5 | 303297921775458 |
| 6 | -2646995089135122277190614296178 |
| 7 | 82888930564911423983289917045230098319343306166666586941750246 |