Search: id:A083421
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%I A083421
%S A083421 1,8,46,242,1234,6218,31186,156122,780994,3905738,19530226,97654202,
%T A083421 488277154,2441398058,12207014866,61035123482,305175715714,
%U A083421 1525878775178,7629394269106,38146972131962,190734862232674
%N A083421 a(n)=2*5^n-2^n.
%C A083421 Third binomial transform of A014551(n+1)
%F A083421 G.f.: (1+x)/((1-2x)(1-5x)); e.g.f.: 2exp(5x)-exp(2x).
%Y A083421 Sequence in context: A026867 A026885 A052244 this_sequence A113992 A037070 
               A141788
%Y A083421 Adjacent sequences: A083418 A083419 A083420 this_sequence A083422 A083423 
               A083424
%K A083421 easy,nonn
%O A083421 0,2
%A A083421 Paul Barry (pbarry(AT)wit.ie), Apr 29 2003

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