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A027269 a(n) = Sum_{k=0..2n-2} T(n,k) * T(n,k+2), with T given by A026536. 0

%I

%S 5,19,150,561,4797,18089,156900,596674,5205950,19932353,174609162,

%T 672106267,5906040623,22829936683,201114700568,780077588440,

%U 6885880226784,26784015828458,236826459554380,923352937530146,8175978023317170,31940549289135429,283166067626865540

%N a(n) = Sum_{k=0..2n-2} T(n,k) * T(n,k+2), with T given by A026536.

%K nonn

%O 2,1

%A _Clark Kimberling_

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

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Last modified June 17 18:28 EDT 2021. Contains 345085 sequences. (Running on oeis4.)