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.
: x+sum(num2words(x).count(d) for d in 'aeiou'))) # _Chai Wah Wu's wiki page.
: x+sum(num2words(x).count(d) for d in 'aeiou'))) # _Chai Wah Wu has authored 0 sequences.