%I
%S 1,8,30,224,880,6656,27104,206336,859392,6565888,27765760,212615168,
%T 908943360,6970998784,30045757440,230691307520,1000634122240,
%U 7689454223360,33522958204928,257783270211584,1128501249835008,8682602001072128,38141362595430400,293587672402755584
%N a(n) = A027144(2n, n-1).
%K nonn
%O 1,2
%A _Clark Kimberling_
%E More terms from _Sean A. Irvine_, Oct 24 2019
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