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 | 1 |
2 | 2 |
3 | 9 |
4 | 216 |
5 | 174960 |
6 | 146932807680 |
7 | 125937291507579224064000 |
8 | 108755666689817047890109782510255885778944000000 |
9 | 93143885917529328515023382841413836868525118214478405334515136630707122998865821696000000000000 |