Search: id:A027286
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%I A027286
%S A027286 1,4,18,56,190,564,1722,4976,14454,40940,115698,322728,896558,
%T A027286 2471588,6786090,18537184,50459366,136844892,370030434,997705240,
%U A027286 2683514526,7201203988,19284880794,51546789456,137541880150,366412976332
%N A027286 a(n) = Sum{(k+1)*T(n,k)}, 0<=k<=2n, T given by A026584.
%F A027286 G.f.: (3x^2+2x+1)/(1-x-4x^2)^2.
%Y A027286 Sequence in context: A027659 A059133 A020644 this_sequence A119044 A058851 
               A073373
%Y A027286 Adjacent sequences: A027283 A027284 A027285 this_sequence A027287 A027288 
               A027289
%K A027286 nonn
%O A027286 0,2
%A A027286 Clark Kimberling (ck6(AT)evansville.edu)

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