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%I #8 Oct 27 2019 11:33:46
%S 1,9,62,320,1837,8376,45666,198471,1065418,4523403,24247545,101589616,
%T 547233490,2273356598,12341618508,50963502172,279167141052,
%U 1147495086055,6344204700832,25979651242434,144938080884808,591635283209270,3328970814605391,13551109648829458,76853618775913752
%N a(n) = Sum_{k=0..n-3} T(n,k) * T(n,k+3), with T given by A026758.
%K nonn
%O 3,2
%A _Clark Kimberling_
%E More terms from _Sean A. Irvine_, Oct 24 2019
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