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.
q for 0 < k <= n. Next define the triangle T_q by T(q; n, k) = Sum's wiki page.
q for 0 < k <= n. Next define the triangle T_q by T(q; n, k) = Sum has authored 0 sequences.