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 A254851 Number of (n+2)X(5+2) 0..1 arrays with no 3x3 subblock diagonal sum one and no antidiagonal sum two 1

%I #4 Feb 08 2015 11:32:11

%S 13328,16900,34176,99856,296800,902500,2811104,8773444,26777920,

%T 80389156,241051180,729864256,2245069416,6937890436,21229314464,

%U 64337307904,194210751732,588215370304,1798168002120,5520328813444,16886469006088

%N Number of (n+2)X(5+2) 0..1 arrays with no 3x3 subblock diagonal sum one and no antidiagonal sum two

%C Column 5 of A254854

%H R. H. Hardin, <a href="/A254851/b254851.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 08 2015

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Last modified July 17 17:52 EDT 2024. Contains 374377 sequences. (Running on oeis4.)