|
%I #4 Nov 08 2016 12:35:56
%S 0,48510,35217368,33064544648,30622716754158,28318244060569024,
%T 26189441962786135952,24220244091289286969102,
%U 22398930025770598869206272,20714553726314324138411735648,19156837196453052929812096448268
%N Number of 7Xn 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
%C Row 7 of A278014.
%H R. H. Hardin, <a href="/A278020/b278020.txt">Table of n, a(n) for n = 1..43</a>
%e Some solutions for n=2
%e ..0..2. .0..1. .0..1. .0..2. .0..2. .0..2. .0..2. .0..2. .0..2. .0..1
%e ..1..1. .1..2. .0..2. .1..1. .1..2. .1..0. .1..0. .1..1. .1..2. .0..2
%e ..0..0. .1..1. .1..1. .2..0. .0..0. .0..2. .0..0. .0..2. .0..2. .1..1
%e ..0..1. .2..0. .0..2. .1..0. .1..2. .0..2. .0..2. .0..1. .2..2. .1..0
%e ..2..2. .2..0. .2..2. .1..2. .1..0. .1..2. .1..2. .1..0. .2..0. .2..2
%e ..0..2. .0..1. .0..2. .0..1. .1..0. .0..2. .0..0. .2..1. .2..1. .2..1
%e ..1..1. .2..0. .1..2. .2..2. .2..1. .1..0. .2..1. .0..0. .0..0. .0..0
%Y Cf. A278014.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 08 2016
| 