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 | 208 |
3 | 399480 |
4 | 10481104587335216 |
5 | 123992391755346585462944 |
6 | 81988033818127290961528376002383682011136 |
7 | 4480981113642949878240780781141254929604041319907336 |