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%I #4 Dec 17 2013 06:15:55
%S 34416,155104,907940,6887232,57147272,530983144,5012939992,
%T 50952500976,512188465988,5479606300380,57126934560812,
%U 630600586218188,6718939422891932,75570674572025348,815496420906106884
%N Number of (n+1)X(4+1) 0..7 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 21
%C Column 4 of A233875
%H R. H. Hardin, <a href="/A233872/b233872.txt">Table of n, a(n) for n = 1..123</a>
%e Some solutions for n=2
%e ..1..7..4..7..1....6..3..0..3..0....0..6..6..6..3....4..7..3..1..1
%e ..4..1..7..1..0....6..0..6..0..6....0..3..0..7..1....1..1..6..7..4
%e ..7..1..0..1..7....1..4..1..4..1....6..0..6..6..3....0..7..3..1..7
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 17 2013
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