Search: id:A138288
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%I A138288
%S A138288 1,9,89,881,8721,86329,854569,8459361,83739041,828931049,8205571449,
%T A138288 81226783441,804062262961,7959395846169,78789896198729,779939566141121,
%U A138288 7720605765212481,76426118085983689,756540575094624409
%N A138288 A054320(n) - A001078(n).
%C A138288 a(n) = A072256(n+1);
%C A138288 (sqrt(2)+sqrt(3))^(2*n+1)=A054320(n-1)*sqrt(2)+a(n)*sqrt(3).
%C A138288 a(n) = 10*a(n-1) - a(n-2)) for n > 1;
%F A138288 a(n) = A001079(n) + 2*A001078(n).
%o A138288 (Other) sage: [lucas_number1(n,10,1)-lucas_number1(n-1,10,1) for n in 
               xrange(1, 20)]# [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), 
               Nov 10 2009]
%Y A138288 Cf. A138281.
%Y A138288 Sequence in context: A133486 A015584 A072256 this_sequence A059482 A109002 
               A142991
%Y A138288 Adjacent sequences: A138285 A138286 A138287 this_sequence A138289 A138290 
               A138291
%K A138288 nonn
%O A138288 0,2
%A A138288 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 12 2008

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