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.
.toString.toCharArray).flatten.sliding(2, 2).map('s wiki page.
.toString.toCharArray).flatten.sliding(2, 2).map( has authored 0 sequences.