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A087210 Numbers n such that n^2 can be expressed as x^3 + y^4 with positive integers x,y and gcd(n,x,y)=1. 1

%I

%S 3,29,76,397,143027,175784,298483,648613,4146689,4308693,7079295,

%T 8288063,8893220,22015007,30042907,54142096,101907569,109233295,

%U 395856397,444716637,474554340,579133627,655054991,949475843,1036435896

%N Numbers n such that n^2 can be expressed as x^3 + y^4 with positive integers x,y and gcd(n,x,y)=1.

%H Dario Alpern, <a href="http://www.alpertron.com.ar/SUMPOWER.HTM#4_3_2">Sum of powers</a>, <a href="http://www.alpertron.com.ar/SPOW432.HTM">Sum of powers 432</a>.

%e a(2)=29 because 29^2=6^3+5^4.

%Y Cf. A087209.

%K nonn,more

%O 1,1

%A _Hugo Pfoertner_, Aug 26 2003

%E More terms from _Hugo Pfoertner_, Sep 15 2003

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Last modified September 19 12:57 EDT 2019. Contains 327198 sequences. (Running on oeis4.)