Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #6 May 17 2024 15:39:29
%S 1,7,8,12,8,4,4,3,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,
%T 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,
%U 1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2,1,1,2,3,2
%N 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)=7.
%H <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,0,0,1).
%Y Cf. A076839, A105736 - A105746.
%K nonn
%O 1,2
%A _Zak Seidov_, Apr 19 2005
%E More terms from _Ray Chandler_, May 17 2024