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 A265968 Number of nX3 0..4 arrays with the absolute differences of each element with its with horizontal and vertical neighbors unique. 1

%I #4 Dec 19 2015 09:44:26

%S 92,1504,6112,23920,89776,339952,1282192,4848664,18309816,69096768,

%T 260725200,984425248,3713747128,14013775968,52889517856,199579642728,

%U 753070588072,2841950773104,10724343546776,40468052281360

%N Number of nX3 0..4 arrays with the absolute differences of each element with its with horizontal and vertical neighbors unique.

%C Column 3 of A265973.

%H R. H. Hardin, <a href="/A265968/b265968.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A265973.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 19 2015

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Last modified June 16 08:45 EDT 2024. Contains 373424 sequences. (Running on oeis4.)