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A206976 Number of 4Xn 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal 1

%I #5 Mar 31 2012 12:37:14

%S 232,53824,8688551,1391081032,223912418544,36046917008352,

%T 5803617279636252,934395050456234307,150438211960740083862,

%U 24220640150272628859680,3899529391670309221320411

%N Number of 4Xn 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal

%C Row 4 of A206974

%H R. H. Hardin, <a href="/A206976/b206976.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..0..1..3..0....1..3..2..1....3..1..1..1....1..0..3..2....3..2..2..1

%e ..2..0..3..0....1..1..0..3....3..3..3..1....1..1..0..0....1..2..2..0

%e ..2..0..3..2....3..3..3..0....3..1..3..3....3..1..3..0....1..0..1..0

%e ..1..2..0..2....0..2..1..3....3..1..1..1....1..0..1..3....1..0..3..3

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 14 2012

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Last modified April 23 08:33 EDT 2024. Contains 371905 sequences. (Running on oeis4.)