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 | 2520 |
2 | 7484400 |
3 | 22870848000 |
4 | 70579794285000 |
5 | 218799620836917120 |
6 | 679953587124305894400 |
7 | 2116187746296592370688000 |
8 | 6592431144164903462359935000 |
9 | 20550499897066845200729434200000 |
10 | 64091912654977017603465324370118400 |
11 | 199956261330234671205699024876891648000 |