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.
* with rows n and columns 1 <= k <= n (_R. J. Mathar's wiki page.
* with rows n and columns 1 <= k <= n (_R. J. Mathar has authored 0 sequences.