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=0 if i<0, n<0 or n>i; iv) g^(i)_n - g^(i)'s wiki page.
n=0 if i<0, n<0 or n>i; iv) g^(i)_n - g^(i) has authored 0 sequences.