Search: id:A086443
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%I A086443
%S A086443 0,0,1,10,67,376,1909,9094,41479,183412,792697,3367618,14120011,
%T A086443 58605808,241331965,987648382,4022338063,16318934764,66007533313,
%U A086443 266354656186,1072779614035,4314363685480,17330677214341,69552836627830
%N A086443 Expansion of x^2/((1-4x)(1-3x)^2).
%C A086443 Second binomial transform of A000295. Binomial transform of A066810 (with 
               two leading zeros).
%F A086443 a(n)=4^n-3^n-n3^(n-1)
%Y A086443 Sequence in context: A163615 A117305 A108275 this_sequence A026844 A026875 
               A026868
%Y A086443 Adjacent sequences: A086440 A086441 A086442 this_sequence A086444 A086445 
               A086446
%K A086443 easy,nonn
%O A086443 0,4
%A A086443 Paul Barry (pbarry(AT)wit.ie), Jul 21 2003

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