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A268249 T(n,k)=Number of nXk 0..k arrays with every repeated value in every row greater than, and every column greater than or equal to, the previous repeated value. 3

%I #4 Jan 29 2016 07:37:00

%S 2,9,4,60,81,8,570,3600,729,15,6960,324900,216000,6084,28,104006,

%T 48441600,185193000,12067722,49284,51,1837752,10817248036,

%U 337153536000,98956027822,648144348,386884,92,37478718,3377332413504,1125058699232216

%N T(n,k)=Number of nXk 0..k arrays with every repeated value in every row greater than, and every column greater than or equal to, the previous repeated value.

%C Table starts

%C ...2........9............60...............570.................6960

%C ...4.......81..........3600............324900.............48441600

%C ...8......729........216000.........185193000.........337153536000

%C ..15.....6084......12067722.......98956027822.....2213773305829075

%C ..28....49284.....648144348....50740994294843.13958709698552890082

%C ..51...386884...33600202086.25094770808231271

%C ..92..2965284.1691726672094

%C .164.22268961

%C .290

%H R. H. Hardin, <a href="/A268249/b268249.txt">Table of n, a(n) for n = 1..48</a>

%F Empirical for column k:

%F k=1: a(n) = 2*a(n-1) +a(n-2) -2*a(n-3) -a(n-4)

%F k=2: [order 15]

%e Some solutions for n=2 k=4

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

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

%Y Column 1 is A029907(n+1).

%Y Column 2 is A268014.

%Y Column 3 is A267977.

%Y Row 1 is A268205.

%Y Row 2 is A268206.

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_, Jan 29 2016

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)