%I #21 Jun 02 2023 01:56:41
%S 3,4,1,3,1,1,2,5,3,3,2,1,1,3,1,3,1,4,1,1,2,2,2,1,3,2,1,3,1,1,1,5,3,2,
%T 2,3,3,2,1,3,1,1,1,2,1,2,1,1,3,4,1,1,1,1,1,4,4,1,1,1,1,1,2,3,9,1,1,1,
%U 1,3,2,5,1,2,1,1,1,5,1,1,3,1,1,3,1,2,1,3,1,3,3,2,1,1,2,1,1,4,2,3
%N Number of integral solutions to Mordell's equation y^2 = x^3 + n^3 with y nonnegative.
%C Equivalently, number of different values of x in the integral solutions to the Mordell's equation y^2 = x^3 + n^3.
%F a(n) = (A081119(n^3)+1)/2 = A134108(n^3) = (A356706(n)+1)/2 = A356707(n)+1.
%e a(2) = 4 because the solutions to y^2 = x^3 + 2^3 with y >= 0 are (-2,0), (1,3), (2,4), and (46,312).
%o (SageMath) [(len(EllipticCurve(QQ, [0, n^3]).integral_points(both_signs=True))+1)/2 for n in range(1, 61)] # _Lucas A. Brown_, Sep 04 2022
%Y Cf. A081119, A134108, A356706, A356707.
%Y Indices of 1, 2, 3, and 4: A356709, A356710, A356711, A356712.
%K nonn,hard
%O 1,1
%A _Jianing Song_, Aug 23 2022
%E a(21) corrected and a(22)-a(60) by _Lucas A. Brown_, Sep 04 2022
%E a(61)-a(100) from _Max Alekseyev_, Jun 01 2023