Search: id:A055389
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%I A055389
%S A055389 1,2,2,4,6,10,16,26,42,68,110,178,288,466,754,1220,1974,3194,5168,8362,
%T A055389 13530,21892,35422,57314,92736,150050,242786,392836,635622,1028458,
%U A055389 1664080,2692538,4356618,7049156,11405774,18454930,29860704,48315634
%N A055389 a(0)=1, then twice the Fibonacci sequence.
%F A055389 G.f.: (1+x-x^2)/(1-x-x^2)
%Y A055389 Essentially the same as A006355.
%Y A055389 Sequence in context: A034410 A050194 A006355 this_sequence A163733 A084202 
               A053637
%Y A055389 Adjacent sequences: A055386 A055387 A055388 this_sequence A055390 A055391 
               A055392
%K A055389 easy,nonn
%O A055389 1,2
%A A055389 Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 05 2000
%E A055389 More terms from James A. Sellers (sellersj(AT)math.psu.edu), Jul 07 2000

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