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%I #9 Jun 13 2015 00:50:14
%S 1,2,7,18,39,82,167,338,679,1362,2727,5458,10919,21842,43687,87378,
%T 174759,349522,699047,1398098,2796199,5592402,11184807,22369618,
%U 44739239,89478482,178956967,357913938,715827879,1431655762
%N Row sums of array T as in A054110.
%H <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (2,1,-2)
%F G.f.: [1+2x^2+4x^3]/[(1-x^2)(1-2x)]. - _Ralf Stephan_, Apr 03 2004
%F a(n+1) = 2^(n+4)/3 -7/2 +(-1)^n/6, n>0. - _R. J. Mathar_, May 20 2013
%K nonn
%O 0,2
%A _Clark Kimberling_
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