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A260000 Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000101 1

%I #4 Jul 12 2015 10:25:31

%S 7284,32525,112570,197804,450718,1890678,4405472,8894577,30259110,

%T 85219828,189364182,533978795,1526717742,3840271170,10224583070,

%U 27687815294,72927251426,197908151664,519999108640,1358896817375

%N Number of (n+2)X(7+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000101

%C Column 7 of A260001

%H R. H. Hardin, <a href="/A260000/b260000.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A260001

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 12 2015

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Last modified July 22 15:42 EDT 2024. Contains 374540 sequences. (Running on oeis4.)