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 A078375 #9 Mar 27 2025 04:29:24
%S A078375 2,5,3,2,2,17,2,2,2,31,3,2,37,43,2,2,2,3,3,5,2,2,73,2,2,2,89,7,2,101,
%T A078375 2,113,2,2,127,2,3,2,3,5,2,2,2,7,2,2,3,2,3,5,3,2,197,2,2,2,7,2,223,3,
%U A078375 2,2,233,241,2,2,257,2,2,5,269,2,283,17,2,2,3,2,2,3,5,2,337,2,347,2,3,2
%N A078375 Smallest prime factor of numbers which can be written as sum of a positive square and a positive cube.
%H A078375 Amiram Eldar, <a href="/A078375/b078375.txt">Table of n, a(n) for n = 1..10000</a>
%F A078375 a(n) = A020639(A055394(n)).
%t A078375 FactorInteger[#][[1, 1]] & /@ Select[Range[300], Length[Reduce[a^2 + b^3 == # && a > 0 && b > 0, {a, b}, Integers]] > 0 &] (* _Amiram Eldar_, Mar 27 2025 *)
%Y A078375 Cf. A020639, A055394, A078376.
%K A078375 nonn
%O A078375 1,1
%A A078375 _Reinhard Zumkeller_, Nov 25 2002