A275093 - OEIS

%I #4 Jul 16 2016 09:25:46

%S 41,2916,5440,18440,87924,510680,2934756,16976416,100163280,587376672,

%T 3441832776,20278827840,119081922956,699883834544,4115716304856,

%U 24201876220300,142224779364880,836403191956404,4917486759591212

%N Number of 5Xn 0..2 arrays with no element equal to any value at offset (0,-2) (-1,-2) or (-2,-1) and new values introduced in order 0..2.

%C Row 5 of A275090.

%H R. H. Hardin, <a href="/A275093/b275093.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%Y Cf. A275090.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 16 2016