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Number of (n+1)X(7+1) 0..7 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1
1

%I #4 Dec 25 2013 14:52:31

%S 2094334,609452862,184360780592,57473377454022,18122285038689252,

%T 5747445821273175392,1828227876741151008626,582516650060275178947138,

%U 185790286741345464937151494,59296242342650026057892424900

%N Number of (n+1)X(7+1) 0..7 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1

%C Column 7 of A234421

%H R. H. Hardin, <a href="/A234420/b234420.txt">Table of n, a(n) for n = 1..84</a>

%e Some solutions for n=1

%e ..4..4..4..5..6..5..4..3....2..2..2..2..1..1..0..1....6..6..5..6..6..7..6..5

%e ..4..5..4..5..5..5..4..4....2..2..1..2..2..1..1..1....6..6..6..6..6..6..6..6

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 25 2013