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.
%I A340697 #7 Jan 21 2021 07:15:44 %S A340697 81,256,279936,62748517,418195493,149398068209479362001 %N A340697 Upper of a pair of adjacent perfect powers x^p and y^q with p, q >= 4. %e A340697 See A340696. %Y A340697 The corresponding lower member of the pair is A340696. %Y A340697 Cf. A001597, A340700, A340701. %K A340697 nonn,hard,more %O A340697 1,1 %A A340697 _Hugo Pfoertner_, Jan 21 2021