Search: id:A077821
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%I A077821
%S A077821 1,4,16,64,253,1000,3952,15616,61705,243820,963424,3806848,15042277,59437648,
%T A077821 234860320,928020736,3666956113,14489511508,57253465072,226229798080,893918323981,
%U A077821 3532204761400,13957058650384,55149545207296,217916425857241,861069089144764
%N A077821 Expansion of (1-x)^(-1)/(1-3*x-3*x^2-3*x^3).
%Y A077821 Sequence in context: A065738 A006811 A005755 this_sequence A000302 A050734 
               A075614
%Y A077821 Adjacent sequences: A077818 A077819 A077820 this_sequence A077822 A077823 
               A077824
%K A077821 nonn
%O A077821 0,2
%A A077821 N. J. A. Sloane (njas(AT)research.att.com), Nov 17 2002

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