A278191 - OEIS

A278191

Number of 4Xn 0..3 arrays with every element plus 1 mod 4 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.

%I #4 Nov 14 2016 22:34:14

%S 0,200,13720,1075258,81691958,6196345742,469577175712,35577034730206,

%T 2695338849906758,204197662339944373,15469874074262345128,

%U 1171986102689397728682,88788773705648773915186

%N Number of 4Xn 0..3 arrays with every element plus 1 mod 4 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 4 of A278188.

%H R. H. Hardin, <a href="/A278191/b278191.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

%e ..0..3..2. .0..3..2. .0..1..2. .0..2..1. .0..3..2. .0..3..1. .0..1..0

%e ..1..2..1. .1..2..3. .3..1..3. .1..3..1. .1..1..0. .1..2..2. .1..2..3

%e ..0..3..2. .2..1..0. .2..3..0. .2..0..2. .2..0..3. .3..1..1. .0..0..2

%e ..0..1..0. .3..0..0. .1..3..2. .1..2..3. .3..3..3. .0..2..0. .2..3..2

%Y Cf. A278188.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 14 2016