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) |
---|---|
2 | 2 |
3 | 3 |
4 | 6 |
5 | 18 |
6 | 108 |
7 | 1944 |
8 | 209952 |
9 | 408146688 |
10 | 85691213438976 |
11 | 34974584955819144511488 |
12 | 2997014624388697307377363936018956288 |
13 | 104819342594514896999066634490728502944926883876041385836544 |