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 | 1 |
2 | 3 |
3 | 20 |
4 | 996 |
5 | 9333312 |
6 | 6406603084568576 |
7 | 16879085743296493582043922521915392 |
8 | 717956902513121252476003434439730211917452457474409186632352788205535232 |