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A203062 Number of nX4 0..6 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor 1

%I #5 Mar 31 2012 12:36:55

%S 252,491953,608893191,647485600638,710826096063039,791448514067936533,

%T 877818049790930479334,972407155723593469149291,

%U 1077696680991913000461769509,1194519944070007772038761238940

%N Number of nX4 0..6 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor

%C Column 4 of A203066

%H R. H. Hardin, <a href="/A203062/b203062.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..1..5..1..4....2..2..2..1....1..6..5..1....3..0..6..0....4..5..4..4

%e ..3..5..4..4....4..5..3..1....2..6..3..3....4..4..6..5....2..6..6..6

%e ..5..0..2..3....0..5..0..3....4..4..5..1....2..4..6..0....2..2..4..6

%e ..5..6..6..5....6..5..0..3....0..0..5..2....5..2..6..1....2..0..5..4

%e ..4..1..0..1....6..0..0..0....4..4..4..1....5..1..5..1....3..5..5..5

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 28 2011

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Last modified April 19 06:16 EDT 2024. Contains 371782 sequences. (Running on oeis4.)