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A184152 1/4 the number of (n+1)X9 0..3 arrays with every 2X2 subblock having at least two equal elements connected horizontally or vertically 0

%I

%S 1119511003,26652142523719,608216983453837129,13967039613166010435737,

%T 320461324635255992201246287,7353703264467632594839577120701

%N 1/4 the number of (n+1)X9 0..3 arrays with every 2X2 subblock having at least two equal elements connected horizontally or vertically

%C Column 8 of A184153

%e Some solutions for 3X9 with a(1,1)=0

%e ..0..0..0..0..0..0..2..1..1....0..0..0..0..0..0..0..0..3

%e ..0..0..0..0..0..0..2..1..3....0..0..0..0..0..0..0..0..2

%e ..0..0..0..0..0..3..2..3..3....0..0..0..0..0..3..0..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 09 2011

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Last modified August 3 08:53 EDT 2020. Contains 336197 sequences. (Running on oeis4.)