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 is 0 elsewhere). Here (n)_m is the falling factorial with (n)_0=1 and (n)'s wiki page.
n is 0 elsewhere). Here (n)_m is the falling factorial with (n)_0=1 and (n) has authored 0 sequences.