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 A105742 #6 May 17 2024 15:42:01 %S A105742 1,9,10,16,8,3,5,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2, %T A105742 3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1, %U A105742 2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1 %N A105742 For n>2, a(n) > 0 is such that a(n-1)^2+4*a(n-2)*a(n) is a minimal square, a(1)=1,a(2)=9. %H A105742 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,0,0,1). %Y A105742 Cf. A076839, A105736 - A105746. %K A105742 nonn %O A105742 1,2 %A A105742 _Zak Seidov_, Apr 19 2005 %E A105742 More terms from _Ray Chandler_, May 17 2024