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a(n) = Sum_{k=0..n} T(n,k) * T(n,k+2), with T given by A026323.
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%I #9 Oct 27 2019 11:14:03

%S 1,10,84,691,5625,45891,375627,3087869,25492266,211320955,1758522205,

%T 14686149360,123057387973,1034283033735,8717735547615,73673259617948,

%U 624130742851351,5299391600814357,45091368351899283,384429112020570375

%N a(n) = Sum_{k=0..n} T(n,k) * T(n,k+2), with T given by A026323.

%K nonn

%O 1,2

%A _Clark Kimberling_

%E More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 23 2003

%E Title corrected by _Sean A. Irvine_, Oct 27 2019