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A265005 T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with rows and columns nondecreasing. 7

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

%S 1,1,1,1,2,1,1,2,4,1,1,3,7,9,1,1,3,14,29,21,1,1,4,21,112,140,51,1,1,4,

%T 41,261,1095,758,127,1,1,5,54,846,4919,13009,4448,323,1,1,5,86,1720,

%U 27000,120096,175865,27782,835,1,1,6,120,4193,97341,1268728,3558888,2647438

%N T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with rows and columns nondecreasing.

%C Table starts

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

%C .1....2.......2.........3............3..............4..............4

%C .1....4.......7........14...........21.............41.............54

%C .1....9......29.......112..........261............846...........1720

%C .1...21.....140......1095.........4919..........27000..........97341

%C .1...51.....758.....13009.......120096........1268728........8360853

%C .1..127....4448....175865......3558888.......76714325.....1001060834

%C .1..323...27782...2647438....123026475.....5732148226...155796077603

%C .1..835..182322..43347498...4817478608...507120480166.30055866217955

%C .1.2188.1245399.760869739.209081118730.51689513352516

%H R. H. Hardin, <a href="/A265005/b265005.txt">Table of n, a(n) for n = 1..128</a>

%e Some solutions for n=4 k=4

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

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

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

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

%Y Column 2 is A001006.

%Y Row 2 is A004526(n+2).

%Y Row 3 is A201272.

%Y Row 4 is A201447.

%Y Row 5 is A200987.

%Y Row 7 is A201071.

%K nonn,tabl

%O 1,5

%A _R. H. Hardin_, Nov 29 2015

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Last modified April 19 11:14 EDT 2024. Contains 371791 sequences. (Running on oeis4.)