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%I #8 Jun 04 2013 12:02:30
%S 1,5,17,57,197,701,2549,9413,35153,132393,501905,1912769,7321081,
%T 28122281,108355481,418590521,1620751301,6287963741,24438234341,
%U 95128761941,370821819581,1447337568461,5655535495901,22122396951101
%N T(2n,n), array T as in A054110.
%F G.f.: [ -1+4x+2*sqrt(1-4x)]/[(1-x)(1-4x)]. - _Ralf Stephan_, Apr 03 2004
%F a(n) = 4s(n)+1, with s(n) = A079309(n) = sum(k=1, n, C(2k+1, k+1)). - _Ralf Stephan_, Apr 03 2004
%K nonn
%O 0,2
%A _Clark Kimberling_
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