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A252601 Number of (n+2)X(4+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 2 or 5 1

%I #4 Dec 19 2014 07:19:03

%S 2792,6978,22623,81441,318274,1274571,5243537,21992185,92865411,

%T 394359153,1680557237,7170758789,30633016745,130953875907,

%U 559929985978,2394657771735,10242794843158,43813780754441,187421784079704

%N Number of (n+2)X(4+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 2 or 5

%C Column 4 of A252605

%H R. H. Hardin, <a href="/A252601/b252601.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 19 2014

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Last modified April 23 18:16 EDT 2024. Contains 371916 sequences. (Running on oeis4.)