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%I #8 Oct 26 2019 22:42:37
%S 2,8,60,312,2030,11752,74174,450292,2829898,17572000,110733420,
%T 695885000,4403631638,27874477216,177101756296,1126506215424,
%U 7182056699722,45847087891480,293141734241436,1876495434801400,12026885684352138,77161051350902456,495534832203481122
%N a(n) = Sum_{k=0..2n-1} T(n,k) * T(n,k+1), with T given by A026568.
%K nonn
%O 1,1
%A _Clark Kimberling_
%E More terms from _Sean A. Irvine_, Oct 26 2019
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