A233690 - OEIS

A233690

Number of (n+1)X(7+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 10, and no two adjacent values equal

%I #4 Dec 14 2013 19:09:15

%S 43540,1596200,62569964,2662026560,113995582540,4934227972036,

%T 213645503481064,9270801819620976,402191437421176864,

%U 17459908484631363660,757809757739957565140,32899894121039441950420

%N Number of (n+1)X(7+1) 0..3 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 10, and no two adjacent values equal

%C Column 7 of A233691

%H R. H. Hardin, <a href="/A233690/b233690.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 14 2013