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A203061 Number of nX3 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 49,16625,3421817,608893191,111898706731,20929382959987,

%T 3898031053158067,724530008223344653,134743665957095646765,

%U 25064589517883536625961,4662096688032488638076973,867142733431123407591563935

%N Number of nX3 0..6 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor

%C Column 3 of A203066

%H R. H. Hardin, <a href="/A203061/b203061.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 28 2011

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Last modified August 26 22:10 EDT 2024. Contains 375462 sequences. (Running on oeis4.)