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%I #5 Mar 31 2012 12:37:22
%S 715,7594479,84091222866,931104734002155,10309684155118737894,
%T 114154269785454920027391,1263976383376771173195964686,
%U 13995414281804368959953485044237,154964620775524737157861783733965485
%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 neighbors
%C Column 7 of A208175
%H R. H. Hardin, <a href="/A208174/b208174.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..0..1..1..2..0..1..0....0..1..0..0..1..0..0....0..0..0..0..0..0..0
%e ..0..0..0..3..0..1..1....2..1..1..0..0..3..1....0..1..1..0..1..0..1
%e ..2..0..2..2..1..0..3....3..0..1..0..1..3..2....1..0..0..2..1..2..3
%e ..2..2..0..2..3..3..0....3..1..3..2..2..1..1....3..0..3..2..2..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 24 2012