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A233065 Number of (4+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i*x(i,j), i=1..4+1} nondecreasing 1

%I

%S 66,564,4393,30692,197625,1180594,6637131,35376058,180164000,

%T 881727864,4167848342,19104362313,85219992355,371017908349,

%U 1580512646968,6602183440874,27094731309792,109419938432611,435460987461844

%N Number of (4+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i*x(i,j), i=1..4+1} nondecreasing

%C Row 4 of A233062

%H R. H. Hardin, <a href="/A233065/b233065.txt">Table of n, a(n) for n = 1..22</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 03 2013

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Last modified May 16 07:30 EDT 2022. Contains 353693 sequences. (Running on oeis4.)