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%I #5 Mar 31 2012 12:37:25
%S 715,4578580,32271626438,228847686794351,1624001903270517563,
%T 11525604443642285224422,81798476241280856702695038,
%U 580533377647449287012352167379,4120113916814898485216382089787455
%N Number of nX7 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors
%C Column 7 of A208872
%H R. H. Hardin, <a href="/A208871/b208871.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..0..0..0..0..0..0..0....0..1..1..2..0..1..0....0..0..0..0..1..2..1
%e ..1..2..1..1..1..1..1....0..0..0..3..0..1..1....1..1..1..2..1..3..3
%e ..1..0..3..2..2..2..3....2..1..2..2..1..0..3....2..2..0..2..2..1..2
%e ..3..0..3..3..3..0..1....2..3..0..2..3..0..0....0..1..1..0..2..3..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 02 2012