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Number of (n+1)X7 0..3 arrays with every 2X2 subblock having the same number of equal diagonal or antidiagonal elements, and new values 0..3 introduced in row major order
1

%I #5 Mar 31 2012 12:37:11

%S 385465,222329489,137393517193,85678539791333,53482634218458697,

%T 33391295169652273181,20848171803769792984489,

%U 13016855431061639609291213,8127274925445989337637081801,5074392067217049794271345475469

%N Number of (n+1)X7 0..3 arrays with every 2X2 subblock having the same number of equal diagonal or antidiagonal elements, and new values 0..3 introduced in row major order

%C Column 6 of A206383

%H R. H. Hardin, <a href="/A206381/b206381.txt">Table of n, a(n) for n = 1..26</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 07 2012