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A183554 T(n,k)=Number of nXk 0..2 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors 9

%I

%S 0,3,3,3,15,3,9,71,71,9,15,299,583,299,15,33,1325,5287,5287,1325,33,

%T 63,5845,46841,95101,46841,5845,63,129,25785,417809,1728533,1728533,

%U 417809,25785,129,255,113841,3721925,31363527,63868351,31363527,3721925,113841

%N T(n,k)=Number of nXk 0..2 arrays with each element equal to either the maximum or the minimum of its horizontal and vertical neighbors

%C Table starts

%C ...0.......3..........3.............9...............15..................33

%C ...3......15.........71...........299.............1325................5845

%C ...3......71........583..........5287............46841..............417809

%C ...9.....299.......5287.........95101..........1728533............31363527

%C ..15....1325......46841.......1728533.........63868351..........2359134621

%C ..33....5845.....417809......31363527.......2359134621........177385265619

%C ..63...25785....3721925.....569461759......87176303417......13344696858771

%C .129..113841...33169105...10339213765....3221377019429....1003889179688773

%C .255..502523..295565367..187720469393..119037100116183...75519989933088273

%C .513.2218399.2633809823.3408294462361.4398697422258081.5681183354145927001

%H R. H. Hardin, <a href="/A183554/b183554.txt">Table of n, a(n) for n = 1..127</a>

%e Some solutions for 4X3

%e ..0..0..1....0..0..1....0..0..0....0..0..1....1..0..0....1..1..0....1..1..1

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

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

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

%Y Column 1 is A062510(n-1)

%K nonn,tabl

%O 1,2

%A _R. H. Hardin_ Jan 05 2011

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Last modified May 29 04:44 EDT 2022. Contains 354122 sequences. (Running on oeis4.)