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A026553 a(n)=T(n,n), T given by A026552. Also a(n) = number of integer strings s(0),...,s(n) counted by T, such that s(n)=0. 0

%I

%S 1,1,3,4,12,20,58,104,300,556,1608,3032,8806,16778,48924,93872,274644,

%T 529684,1553940,3008864,8846772,17184188,50618184,98577712,290817566,

%U 567591142,1676640462,3278348608,9694857750,18986482250

%N a(n)=T(n,n), T given by A026552. Also a(n) = number of integer strings s(0),...,s(n) counted by T, such that s(n)=0.

%K nonn

%O 0,3

%A _Clark Kimberling_

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Last modified September 18 12:28 EDT 2020. Contains 337169 sequences. (Running on oeis4.)