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A203326 Number of nX4 0..2 arrays with the row and column sums nondecreasing 1

%I

%S 15,510,15300,423595,10809576,261192161,6027116491,134485617080,

%T 2917085859508,61924067072669,1290589596346709,26510790447480014,

%U 537817266328044268,10801401586708316358,215047466285433025231

%N Number of nX4 0..2 arrays with the row and column sums nondecreasing

%C Column 4 of A203330

%H R. H. Hardin, <a href="/A203326/b203326.txt">Table of n, a(n) for n = 1..20</a>

%e Some solutions for n=5

%e ..1..1..0..2....1..1..0..0....2..2..1..0....0..1..2..1....1..0..2..0

%e ..1..2..2..0....1..0..2..2....0..1..2..2....0..1..1..2....1..0..1..2

%e ..0..1..2..2....2..0..1..2....0..2..1..2....1..0..2..1....1..0..1..2

%e ..0..1..2..2....0..1..2..2....1..1..1..2....2..0..0..2....1..2..1..1

%e ..1..2..1..2....0..2..1..2....2..0..1..2....0..2..2..1....0..2..1..2

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 31 2011

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Last modified August 15 11:04 EDT 2022. Contains 356145 sequences. (Running on oeis4.)