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 A170935 #17 Aug 27 2019 08:58:29
%S A170935 1,1,2,6,12,24,54,117,247,532,1148,2460,5280,11352,24381,52353,112462,
%T A170935 241570,518840,1114416,2393694,5141385,11043135,23719608,50947336,
%U A170935 109429624,235043840,504850560,1084367865,2329112625,5002699050,10745292366,23079802756,49573086472
%N A170935 b(n)*b(n+1), where b() = A000930().
%H A170935 G. C. Greubel, <a href="/A170935/b170935.txt">Table of n, a(n) for n = 0..1000</a>
%H A170935 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (1,1,3,1,-1,-1).
%F A170935 G.f.: 1 / ((x^3-x^2-1)*(x^3+2*x^2+x-1)). - _Colin Barker_, Jul 25 2013
%t A170935 CoefficientList[Series[1/((x^3 - x^2 - 1)*(x^3 + 2*x^2 + x - 1)), {x, 0, 50}], x] (* _G. C. Greubel_, Apr 26 2017 *)
%t A170935 LinearRecurrence[{1,1,3,1,-1,-1},{1,1,2,6,12,24},40] (* _Harvey P. Dale_, Aug 27 2019 *)
%o A170935 (PARI) x='x+O('x^50); Vec(1/((x^3-x^2-1)*(x^3+2*x^2+x-1))) \\ _G. C. Greubel_, Apr 26 2017
%K A170935 nonn,easy
%O A170935 0,3
%A A170935 _N. J. A. Sloane_, Feb 11 2010