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 A105836 #5 Jun 18 2018 15:10:45 %S A105836 2,3,5,8,4,12,7,10,17,6,11,21,32,13,19,14,33,20,28,24,27,42,40,18,1, %T A105836 39,82,72,154,43,35,78,56,22,9,31,70,69,52,25,48,73,46,119,57,26,15, %U A105836 36,51,50,101,60,41,54,95,61,16,45,76,121,62,59,130,141,81,222,63,87,30,117 %N A105836 For n>2, a(n) not appeared previously is such that a(n-1)^2+4*a(n-2)*a(n) is a minimal square, a(1)=2, a(2)=3. %H A105836 Ivan Neretin, <a href="/A105836/b105836.txt">Table of n, a(n) for n = 1..10000</a> %Y A105836 Cf. A105822, A105828-A105835. %K A105836 nonn %O A105836 1,1 %A A105836 _Zak Seidov_, Apr 22 2005