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A233990 Number of (n+1)X(1+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18 1

%I #5 Dec 18 2013 08:39:21

%S 164,774,3496,17156,81200,409848,1995424,10261264,50945472,264997984,

%T 1333409408,6980548160,35444523776,186152208256,951061641728,

%U 5001337944320,25661802421248,134974683653632,694675975022592

%N Number of (n+1)X(1+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18

%C Column 1 of A233997

%H R. H. Hardin, <a href="/A233990/b233990.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 18 2013

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Last modified March 29 05:28 EDT 2024. Contains 371264 sequences. (Running on oeis4.)