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.
?(Divisible[#, 2^n] &)][[1]], {n, 0, 19}]] (* _Michael De Vlieger's wiki page.
?(Divisible[#, 2^n] &)][[1]], {n, 0, 19}]] (* _Michael De Vlieger has authored 0 sequences.