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 A078381 #9 Mar 27 2025 04:28:31 %S A078381 2,2,3,4,6,2,8,4,6,2,4,9,2,2,6,6,6,4,6,4,6,12,2,6,10,4,2,4,9,2,12,2,4, %T A078381 12,2,8,4,4,4,4,6,12,8,4,6,8,6,8,4,4,8,9,2,12,4,10,4,12,2,9,4,8,2,2,8, %U A078381 18,2,12,16,4,2,16,2,3,8,12,8,6,14,4,6,6,2,8,2,12,8,12,2,2,24,4,10,6,2 %N A078381 Number of divisors of numbers which can be written as sum of a positive square and a positive cube. %H A078381 Amiram Eldar, <a href="/A078381/b078381.txt">Table of n, a(n) for n = 1..10000</a> %F A078381 a(n) = A000005(A055394(n)). %t A078381 DivisorSigma[0, Select[Range[200], Length[Reduce[a^2 + b^3 == # && a > 0 && b > 0, {a, b}, Integers]] > 0 &]] (* _Amiram Eldar_, Mar 27 2025 *) %Y A078381 Cf. A000005, A055394, A078377, A078378, A078382. %K A078381 nonn %O A078381 1,1 %A A078381 _Reinhard Zumkeller_, Nov 25 2002