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A265883 Number of 3Xn arrays containing n copies of 0..3-1 with no element plus any horizontal neighbor equal to 3-1. 1

%I

%S 6,24,152,894,5748,38296,263484,1849602,13192840,95268876,694784964,

%T 5108061670,37808693148,281458023972,2105591552060,15819570917916,

%U 119302287092028,902712209530524,6850780687656012,52130155754678238

%N Number of 3Xn arrays containing n copies of 0..3-1 with no element plus any horizontal neighbor equal to 3-1.

%C Row 3 of A265882.

%H R. H. Hardin, <a href="/A265883/b265883.txt">Table of n, a(n) for n = 1..87</a>

%e Some solutions for n=4

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

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

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

%Y Cf. A265882.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 17 2015

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Last modified May 18 16:24 EDT 2022. Contains 353816 sequences. (Running on oeis4.)