0,3

a(n)=((1+sqrt(5))^n-(1-sqrt(5))^n)/(2^n*sqrt(5))-n^2. a(n)=4*a(n-1)-5*a(n-2)+a(n-3)+2*a(n-4)-a(n-5). G.f.: (-3*x^2+5*x^3)/(1-4*x+5*x^2-x^3-2*x^4+x^5). - Vladeta Jovovic (vladeta(AT)eunet.rs), Jan 08 2002

with (combinat):seq((fibonacci(n)-n^2), n=0..35); # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Mar 21 2009]

Cf. A000045.

Sequence in context: A134765 A023230 A106080 this_sequence A033551 A022777 A033154

Adjacent sequences: A014280 A014281 A014282 this_sequence A014284 A014285 A014286

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fink(AT)cadvision.com (A. R. Fink)