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 A078383 #9 Mar 27 2025 04:28:12
%S A078383 2,5,3,7,5,17,5,15,9,31,14,5,37,43,13,7,15,22,10,18,19,5,73,21,7,43,
%T A078383 89,20,7,101,5,113,63,12,127,2,46,69,50,34,39,10,21,30,43,24,22,34,62,
%U A078383 42,10,9,197,22,105,15,38,18,223,8,115,31,233,241,46,12,257,20,16,58,269
%N A078383 Sum of distinct prime factors of numbers which can be written as sum of a positive square and a positive cube.
%H A078383 Amiram Eldar, <a href="/A078383/b078383.txt">Table of n, a(n) for n = 1..10000</a>
%F A078383 a(n) = A008472(A055394(n)).
%t A078383 Total[FactorInteger[#][[;; , 1]]] & /@ Select[Range[300], Length[Reduce[a^2 + b^3 == # && a > 0 && b > 0, {a, b}, Integers]] > 0 &] (* _Amiram Eldar_, Mar 27 2025 *)
%Y A078383 Cf. A008472, A055394, A078377, A078382, A078384.
%K A078383 nonn
%O A078383 1,1
%A A078383 _Reinhard Zumkeller_, Nov 25 2002