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A027241 a(n) = Sum_{k=0..n-2} T(n,k) * T(n,k+2), with T given by A026769. 0

%I

%S 1,7,38,201,991,5119,25108,131207,652171,3467959,17536482,94772169,

%T 487259131,2668269045,13920305080,77008669339,406737748473,

%U 2267418205201,12099265896022,67836037484417,365071772684071,2055622507395167,11141223793940397,62938095325080771

%N a(n) = Sum_{k=0..n-2} T(n,k) * T(n,k+2), with T given by A026769.

%K nonn

%O 2,2

%A _Clark Kimberling_

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

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Last modified May 23 07:54 EDT 2022. Contains 353961 sequences. (Running on oeis4.)