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A204968 Number of (n+2)X7 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally at least two different ways, and new values 0..1 introduced in row major order 1

%I #5 Mar 31 2012 12:37:04

%S 219755,11064389,547910909,26548318278,1294422106052,63103000253312,

%T 3075660728764228,149917008692340855,7307374345089599577,

%U 356181560686179960227,17361282472044746608190,846237255084435072552419

%N Number of (n+2)X7 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally at least two different ways, and new values 0..1 introduced in row major order

%C Column 5 of A204971

%H R. H. Hardin, <a href="/A204968/b204968.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 21 2012

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Last modified April 23 13:51 EDT 2024. Contains 371914 sequences. (Running on oeis4.)