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%I
%S 1,6,35,154,613,2362,9028,34510,132241,508210,1958460,7565906,
%T 29292820,113633930,441579702,1718642278,6698377449,26139863330,
%U 102125977396,399415127682,1563614796608,6126581578954,24024810462810,94281930087290,370254213115948,1454967778894282
%N a(n) = Sum_{k=0..n-1} T(n,k) * T(n,k+1), with T given by A026615.
%K nonn
%O 1,2
%A _Clark Kimberling_
%E More terms from _Sean A. Irvine_, Oct 20 2019
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