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A232418 Number of (4+1)X(n+1) 0..2 arrays with every element both >= and <= some horizontal, diagonal or antidiagonal neighbor 1

%I #4 Nov 23 2013 13:42:33

%S 3635,890283,107913855,16776955943,2832909399671,467364164103927,

%T 76546444859852733,12560477344372419185,2062688244987841370793,

%U 338674483333185405086591,55602676837277868877030495

%N Number of (4+1)X(n+1) 0..2 arrays with every element both >= and <= some horizontal, diagonal or antidiagonal neighbor

%C Row 4 of A232414

%H R. H. Hardin, <a href="/A232418/b232418.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 23 2013

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Last modified April 25 11:39 EDT 2024. Contains 371969 sequences. (Running on oeis4.)