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A266632 T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no element 1 greater than its north, west, southeast or southwest neighbor modulo n and the upper left element equal to 0. 5

%I #6 Aug 12 2016 06:55:34

%S 1,1,0,1,0,1,1,0,1,2,1,0,1,13,9,1,0,1,64,139,44,1,0,1,438,6342,7623,

%T 265,1,0,1,3265,388863,3030929,585112,1854,1,0,1,27626,27063372,

%U 1772907246,3232725244,60695930,14833,1,0,1,266481,2069073259,1296240915530

%N T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no element 1 greater than its north, west, southeast or southwest neighbor modulo n and the upper left element equal to 0.

%C Table starts

%C ......1..........1.............1..............1.............1..........1

%C ......0..........0.............0..............0.............0..........0

%C ......1..........1.............1..............1.............1..........1

%C ......2.........13............64............438..........3265......27626

%C ......9........139..........6342.........388863......27063372.2069073259

%C .....44.......7623.......3030929.....1772907246.1296240915530

%C ....265.....585112....3232725244.27352023568047

%C ...1854...60695930.5451050692400

%C ..14833.8247622671

%C .133496

%H R. H. Hardin, <a href="/A266632/b266632.txt">Table of n, a(n) for n = 1..60</a>

%e Some solutions for n=4 k=4

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

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

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

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

%Y Column 1 is A000166(n-1).

%K nonn,tabl

%O 1,10

%A _R. H. Hardin_, Jan 01 2016

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Last modified April 25 08:27 EDT 2024. Contains 371964 sequences. (Running on oeis4.)