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A223714 Number of n X 5 0..1 arrays with row sums and column sums unimodal. 1

%I #6 Dec 22 2021 18:02:18

%S 16,418,8953,170568,2961925,47624032,724836148,10522589594,

%T 147121311988,1993532014468,26303155145397,339410850908445,

%U 4295765474711440,53471060142013389,655949043395367371,7943832278560078298

%N Number of n X 5 0..1 arrays with row sums and column sums unimodal.

%C Column 5 of A223716.

%H R. H. Hardin, <a href="/A223714/b223714.txt">Table of n, a(n) for n = 1..18</a>

%e Some solutions for n=3

%e ..0..1..1..0..1....1..0..1..1..1....1..1..1..0..1....1..1..0..1..0

%e ..1..1..0..1..1....0..1..1..1..1....1..0..1..1..0....1..1..1..1..0

%e ..0..0..1..1..1....0..1..1..0..0....1..1..0..0..0....0..1..1..0..1

%Y Cf. A223716.

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 26 2013

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Last modified August 31 22:14 EDT 2024. Contains 375574 sequences. (Running on oeis4.)