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A203564 T(n,k)=Number of nXk 0..2 arrays with row sums equal and column sums equal 7

%I

%S 3,3,3,3,9,3,3,9,9,3,3,33,87,33,3,3,53,177,177,53,3,3,183,993,5673,

%T 993,183,3,3,395,10833,32613,32613,10833,395,3,3,1249,35619,513903,

%U 2577513,513903,35619,1249,3,3,3141,219873,7343451,39612503,39612503,7343451

%N T(n,k)=Number of nXk 0..2 arrays with row sums equal and column sums equal

%C Table starts

%C .3....3.......3..........3...........3............3............3..............3

%C .3....9.......9.........33..........53..........183..........395...........1249

%C .3....9......87........177.........993........10833........35619.........219873

%C .3...33.....177.......5673.......32613.......513903......7343451......185804265

%C .3...53.....993......32613.....2577513.....39612503...1509893003....59794281893

%C .3..183...10833.....513903....39612503...8459809773.360255871643.37057831534783

%C .3..395...35619....7343451..1509893003.360255871643

%C .3.1249..219873..185804265.59794281893

%C .3.3141.2083713.1849858773

%C .3.9459.8710539

%H R. H. Hardin, <a href="/A203564/b203564.txt">Table of n, a(n) for n = 1..84</a>

%e Some solutions for n=5 k=3

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

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

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

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

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

%Y Diagonal is A202779

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_ Jan 03 2012

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Last modified October 27 09:46 EDT 2021. Contains 348273 sequences. (Running on oeis4.)