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Number of nX7 0..2 arrays with no element equal to the sum of elements to its left or one plus the sum of elements above it, modulo 3
1

%I #6 Mar 09 2014 06:13:04

%S 1,8,29,306,1495,18362,107611,1435014,9453266,131139508,930867565,

%T 13097850256,97472804219,1373719026116,10536457574723,147977950815572,

%U 1157525035823201,16176954064274638,128205153484308223

%N Number of nX7 0..2 arrays with no element equal to the sum of elements to its left or one plus the sum of elements above it, modulo 3

%C Column 7 of A239030

%H R. H. Hardin, <a href="/A239029/b239029.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 09 2014