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a(n) = self-convolution of row n of array T given by A026714.
1

%I #11 Jul 23 2023 15:43:09

%S 1,2,11,52,269,1380,7333,37772,203145,1044234,5643127,28956878,

%T 156801451,803721390,4356085375,22313412784,120988175101,619498949770,

%U 3359774186871,17198982565682,93286822081343,477471877247444,2589948726805741,13254933617607980

%N a(n) = self-convolution of row n of array T given by A026714.

%p A027201 := proc(n)

%p add( A026714(n,k)*A026714(n,n-k),k=0..n) ;

%p end proc:

%p seq(A027201(n),n=0..30) ; # _R. J. Mathar_, Oct 21 2019

%K nonn

%O 0,2

%A _Clark Kimberling_

%E NAME corrected by _Sean A. Irvine_, Oct 21 2019

%E More terms from _Ray Chandler_, Oct 22 2019