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 | 1 |
2 | 3 |
3 | 15 |
4 | 315 |
5 | 108675 |
6 | 11878720875 |
7 | 141106591466142946875 |
8 | 19911070158545297149037891328865229296875 |
9 | 396450714858513044552818188364610837019719636049876979456842033610756600341796875 |