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A207891 Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 0 and 1 1 1 vertically 1

%I #7 Dec 18 2015 18:18:02

%S 2,16,84,870,11196,205258,5888458,243318702,13997746826,1221755612002,

%T 156218303323950,28414320426633740,7652673923813342076,

%U 3016400502880224884497,1720903600232362236817474

%N Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 0 and 1 1 1 vertically

%C Diagonal of A207895

%H R. H. Hardin, <a href="/A207891/b207891.txt">Table of n, a(n) for n = 1..16</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 21 2012

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Last modified March 28 07:20 EDT 2024. Contains 371235 sequences. (Running on oeis4.)