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 A275060 #12 Jul 15 2016 12:59:39
%S A275060 1,973,947701,923059801,899059298473,875682833652901,
%T A275060 852914180918627101,830737536531909143473,809137507667898587115601,
%U A275060 788099101730996691941451901,767607715948483110052387035973,747649127234720818194333031585801
%N A275060 Numbers n such that there exists x in N : (x+1)^3 - x^3 = 61*n^2.
%H A275060 Colin Barker, <a href="/A275060/b275060.txt">Table of n, a(n) for n = 1..300</a>
%H A275060 <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (974,-1).
%F A275060 G.f.: x*(1-x) / (1-974*x+x^2).
%F A275060 a(n) = 974*a(n-1) - a(n-2) for n>2.
%F A275060 a(n) = ((487 + 36*sqrt(183))^(-n)*(2 - 9*sqrt(3/61) + (2+9*sqrt(3/61))* (487 + 36*sqrt(183))^(2*n)))/4.
%e A275060 973 is in the sequence because 973^2 = 946729 = ((4387+1)^3-4387^3)/61.
%t A275060 LinearRecurrence[{974,-1},{1,973}, 50] (* _G. C. Greubel_, Jul 15 2016 *)
%o A275060 (PARI) Vec(x*(1-x)/(1-974*x+x^2) + O(x^20))
%Y A275060 Cf. A274972.
%K A275060 nonn,easy
%O A275060 1,2
%A A275060 _Colin Barker_, Jul 15 2016