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%I #12 Oct 27 2019 19:56:44
%S 1,4,15,70,644,5502,46936,402164,3460536,29885592,258897792,
%T 2248831350,19579288052,170814593158,1492927792104,13069310259850,
%U 114576104658836,1005775588360122,8839355153926048,77768991557179442,684886480844420844,6037008171432448154
%N a(n) = Sum_{k=0..m-1} T(n,k) * T(n,k+1), where m=n for n=0,1,2,3; m=2n for n >= 4; and T is given by A026082.
%K nonn
%O 1,2
%A _Clark Kimberling_
%E More terms from _Sean A. Irvine_, Oct 27 2019
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