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A202686 T(n,k)=Number of nXk 0..3 arrays with row sums equal and column sums equal 7
4, 4, 4, 4, 16, 4, 4, 16, 16, 4, 4, 96, 340, 96, 4, 4, 104, 832, 832, 104, 4, 4, 904, 6784, 89520, 6784, 904, 4, 4, 788, 224764, 389704, 389704, 224764, 788, 4, 4, 10448, 496276, 39506424, 290838284, 39506424, 496276, 10448, 4, 4, 6280, 4373632, 235092820 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.4......4.........4............4..............4..............4..............4

.4.....16........16...........96............104............904............788

.4.....16.......340..........832...........6784.........224764.........496276

.4.....96.......832........89520.........389704.......39506424......235092820

.4....104......6784.......389704......290838284.....1901127404...143872363604

.4....904....224764.....39506424.....1901127404.12092687195284.98588916749684

.4....788....496276....235092820...143872363604.98588916749684

.4..10448...4373632..84143001856.11292985987784

.4...6280.231072928.158178730792

.4.134716.353406676

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..83

EXAMPLE

Some solutions for n=4 k=3

..2..2..2....0..1..2....3..0..3....2..1..0....2..2..2....0..3..0....1..2..0

..3..3..0....1..1..1....1..3..2....1..0..2....2..3..1....1..1..1....1..1..1

..3..0..3....2..1..0....3..2..1....0..1..2....3..1..2....1..0..2....1..0..2

..0..3..3....1..1..1....1..3..2....1..2..0....1..2..3....2..0..1....1..1..1

CROSSREFS

Sequence in context: A294246 A107680 A285052 * A134660 A132383 A115639

Adjacent sequences:  A202683 A202684 A202685 * A202687 A202688 A202689

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Dec 22 2011

STATUS

approved

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Last modified September 24 09:10 EDT 2021. Contains 347630 sequences. (Running on oeis4.)