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A027274 a(n) = Sum_{k=0..2n-2} T(n,k) * T(n,k+2), with T given by A026552. 0

%I

%S 10,40,342,1279,11016,41462,359530,1365014,11899516,45501743,

%T 398306769,1531614109,13450930624,51952990090,457449811458,

%U 1773182087440,15646091896400,60825762159338,537651887201990,2095280066101886,18547910336883720,72432026278468535

%N a(n) = Sum_{k=0..2n-2} T(n,k) * T(n,k+2), with T given by A026552.

%K nonn

%O 2,1

%A _Clark Kimberling_

%E More terms from _Sean A. Irvine_, Oct 26 2019

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Last modified July 2 15:30 EDT 2020. Contains 335401 sequences. (Running on oeis4.)