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A251987 Number of (n+2)X(3+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 or 5 1

%I #4 Dec 12 2014 08:46:50

%S 151635,3069283,79998655,2351304453,73509019463,2356741934027,

%T 76367982838785,2486060084557113,81089162155711113,

%U 2647147433243287759,86447154825290659289,2823522712519398894329,92227692059938448409267

%N Number of (n+2)X(3+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 or 5

%C Column 3 of A251989

%H R. H. Hardin, <a href="/A251987/b251987.txt">Table of n, a(n) for n = 1..127</a>

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 12 2014

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Last modified March 28 11:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)