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%I #8 Oct 26 2019 15:57:41
%S 5,40,342,2941,25333,218659,1891683,16403283,142548639,1241293314,
%T 10829045472,94632148659,828235716571,7258991679448,63701900660206,
%U 559673483274827,4922447330226279,43336501329817600,381873520840930490,3367815295820010367,29724409053210972087
%N a(n) = Sum_{k=0..2n-2} T(n,k) * T(n,k+2), with T given by A025177.
%K nonn
%O 2,1
%A _Clark Kimberling_
%E More terms from _Sean A. Irvine_, Oct 26 2019