A233643 - OEIS

%I #4 Dec 14 2013 08:15:56

%S 57456,3277236,170872144,9797170648,531400908604,30250564851612,

%T 1663637150636064,94103848836813810,5210457711411390232,

%U 293448968580448326270,16310213444182983776468,916027510756160768424320

%N Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 2

%C Column 7 of A233644

%H R. H. Hardin, <a href="/A233643/b233643.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 14 2013