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%I
%S 1,10,69,340,1696,8774,44500,203884,998953,5026154,24474925,110862660,
%T 540493911,2706193730,13062307900,59214077236,288140818097,
%U 1439810493778,6934754735653,31544380215556,153401000364266,765589966351344,3686304297844080,16830906540844256,81840064308561274
%N a(n) = Sum_{k=0..n-2} T(n,k) * T(n,k+2), with T given by A026681.
%K nonn
%O 2,2
%A _Clark Kimberling_
%E More terms from _Sean A. Irvine_, Oct 21 2019
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