A275356 - OEIS

%I #4 Jul 24 2016 10:08:10

%S 122,3456,16956,175152,2130176,26615196,351504904,4681346476,

%T 62600128172,840740447848,11302164467116,152036300837588,

%U 2045851077415224,27533784482988444,370572411439612120,4987688003464417032

%N Number of 6Xn 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,-2) and new values introduced in order 0..2.

%C Row 6 of A275352.

%H R. H. Hardin, <a href="/A275356/b275356.txt">Table of n, a(n) for n = 1..127</a>

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A275352.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 24 2016