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A203564 T(n,k)=Number of nXk 0..2 arrays with row sums equal and column sums equal 7
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, 993, 183, 3, 3, 395, 10833, 32613, 32613, 10833, 395, 3, 3, 1249, 35619, 513903, 2577513, 513903, 35619, 1249, 3, 3, 3141, 219873, 7343451, 39612503, 39612503, 7343451 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.3....3.......3..........3...........3............3............3..............3

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

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

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

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

.3..183...10833.....513903....39612503...8459809773.360255871643.37057831534783

.3..395...35619....7343451..1509893003.360255871643

.3.1249..219873..185804265.59794281893

.3.3141.2083713.1849858773

.3.9459.8710539

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..84

EXAMPLE

Some solutions for n=5 k=3

..2..2..2....1..2..0....2..1..0....2..1..0....1..2..0....2..1..0....1..2..0

..2..2..2....2..0..1....1..1..1....1..1..1....2..0..1....2..1..0....0..1..2

..2..2..2....0..1..2....2..0..1....1..1..1....0..1..2....0..2..1....1..2..0

..2..2..2....2..0..1....0..2..1....0..2..1....2..0..1....0..1..2....2..0..1

..2..2..2....0..2..1....0..1..2....1..0..2....0..2..1....1..0..2....1..0..2

CROSSREFS

Diagonal is A202779

Sequence in context: A007428 A184099 A074816 * A111575 A161836 A087576

Adjacent sequences:  A203561 A203562 A203563 * A203565 A203566 A203567

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 03 2012

STATUS

approved

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Last modified October 21 09:09 EDT 2020. Contains 337911 sequences. (Running on oeis4.)