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.
?OddQ] = {}; inversePhi[1] = {1, 2}; inversePhi[m's wiki page.
?OddQ] = {}; inversePhi[1] = {1, 2}; inversePhi[m has authored 0 sequences.