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A207733 Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 1 and 1 0 1 vertically 1

%I #5 Mar 31 2012 12:37:19

%S 21,441,1113,2809,27931,277729,1029231,3814209,27996255,205492225,

%T 919461235,4114067881,26135084283,166026096369,818513711715,

%U 4035297528025,23843629466995,140886430854481,730455853771371

%N Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 1 and 1 0 1 vertically

%C Row 6 of A207729

%H R. H. Hardin, <a href="/A207733/b207733.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = a(n-1) +32*a(n-3) +670*a(n-4) +84*a(n-5) +270*a(n-6) -4602*a(n-7) -97188*a(n-8) -30636*a(n-9) +21060*a(n-10) +124488*a(n-11) +4076280*a(n-12) +1423656*a(n-13) +2847312*a(n-15) -37015056*a(n-16)

%e Some solutions for n=4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 19 2012

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Last modified May 7 20:13 EDT 2024. Contains 372317 sequences. (Running on oeis4.)