%I A125820
%S A125820 1,1,99,295,10193,49001,1086723,6926543,119265217,910405105,13389536259,
%T A125820 115088367703,1528961752529,14221495172249,176752280339811,
%U A125820 1732989592387775,20610950377737217,209321891217088609
%N A125820 a(n)=((1 + 7Sqrt[2])^n + (1 - 7Sqrt[2])^n)/(2).
%F A125820 a(0)=1, a(1)=1, a(n)=2*a(n-1)+97*a(n-2) for n>=2 . G.f.: (1-x)/(1-2*x-97*x^2) 
               . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 12 2006
%t A125820 Expand[Table[((1 + 7Sqrt[2])^n + (1 - 7Sqrt[2])^n)/(2), {n, 0, 30}]] 
               (*Artur Jasinski*)
%Y A125820 Cf. A125819.
%Y A125820 Sequence in context: A031500 A044431 A044812 this_sequence A008902 A008882 
               A156757
%Y A125820 Adjacent sequences: A125817 A125818 A125819 this_sequence A125821 A125822 
               A125823
%K A125820 nonn
%O A125820 1,3
%A A125820 Artur Jasinski (grafix(AT)csl.pl), Dec 10 2006