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 | -4 |
2 | 2560000 |
3 | -19188605030400000000 |
4 | 26257841860510325145600000000000000000000 |
5 | -50074374492086859469933185828103742596055040000000000000000000000000000 |