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A265864 Number of 3Xn arrays containing n copies of 0..3-1 with no element plus any vertical neighbor equal to 3-1. 1

%I #6 Aug 12 2016 06:53:59

%S 2,22,152,1462,13772,139144,1431824,15086614,161254844,1745205892,

%T 19070813984,210091931944,2330150737904,25993622086384,

%U 291414635747552,3281265369826774,37087677409301804,420618333874721044

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

%C Row 3 of A265863.

%H R. H. Hardin, <a href="/A265864/b265864.txt">Table of n, a(n) for n = 1..95</a>

%e Some solutions for n=4

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

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

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

%Y Cf. A265863.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 17 2015

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Last modified June 21 21:50 EDT 2024. Contains 373559 sequences. (Running on oeis4.)