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 A350977 #12 Mar 07 2022 16:27:12 %S A350977 3,4,6,9,10,12,14,17,21,22,27,30,33,34,37,41,42,46,50,57,58,62,65,66, %T A350977 69,70,73,75,77,78,82,85,86,90,93,94,97,98,171,176,275,475,539,1315, %U A350977 2288,2743,5491 %N A350977 Numbers k such that x^3 - y^2 = k has no solution. %C A350977 The 4 seems to be in error here, because x=2, y=2 or x=5, y=11 are a solution to x^3-y^2=4. [No entry here should be in A087285]. - _R. J. Mathar_, Mar 07 2022 %C A350977 Apparently y>0 is enforced; otherwise x=3, y=0 would solve x^3-y^2=27. - _R. J. Mathar_, Mar 07 2022 %D A350977 H. Brocard, Query 2312, L'Intermédiaire des Mathématiciens, 10 (1903), 283-284. %Y A350977 Cf. A350976. Apparently an erroneous version of A081121. %K A350977 nonn,more %O A350977 1,1 %A A350977 _N. J. A. Sloane_, Mar 06 2022