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.
Z-_Z*exp(x*_Z)-1)^2, x)), x, n+1), x, n), n = 1..20); # _Vaclav Kotesovec's wiki page.
Z-_Z*exp(x*_Z)-1)^2, x)), x, n+1), x, n), n = 1..20); # _Vaclav Kotesovec has authored 0 sequences.