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a(n) = T(2n-1,n-1), T given by A026703.
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%I #6 Jan 01 2024 00:29:11

%S 1,5,24,116,564,2752,13457,65891,322905,1583317,7766507,38106295,

%T 187002147,917808733,4505028968,22114223996,108559218028,532938398090,

%U 2616366650454,12844836179996,63061569809046,309603357661692

%N a(n) = T(2n-1,n-1), T given by A026703.

%Y Cf. A026703.

%K nonn

%O 1,2

%A _Clark Kimberling_