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 | 0 |
2 | 1 |
3 | 2 |
4 | 6 |
5 | 6 |
6 | 30 |
7 | 150 |
8 | 1210230 |
9 | 32671170 |
10 | 224494620 |
11 | 1536160080 |
12 | 1482708889200 |
13 | 9918821194590 |
14 | 266029822978920 |
15 | 266029822978920 |
16 | 11358256064006271420 |
17 | 341976204789992332560 |
18 | 128642760444772214170530 |
19 | 2166703103992332274919550 |