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 | 30 |
2 | 1108800 |
3 | 422378820864000 |
4 | 22104404984349254886359040000 |
5 | 7197507570101063450093594584788274920397007398780859842560000000000000 |
6 | 90399509839271079668491458784005740889517921781547218950513473999637402251071324160000000000000000 |