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) |
---|---|
0 | 1 |
1 | 840 |
2 | 2771340 |
3 | 10754814720 |
4 | 44524428808860 |
5 | 190847602744995840 |
6 | 835982760936614190900 |
7 | 3716634993696885851422720 |
8 | 16702642470437308383606668060 |
9 | 75679458912906782280286032887808 |
10 | 345116202503279265243707597937393840 |
11 | 1581997780375359530321517073184807976960 |