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