login
A203031
T(n,k)=Number of nXk 0..3 arrays with row sums equal and column sums unequal to adjacent columns
12
4, 12, 4, 36, 28, 4, 108, 396, 120, 4, 324, 4904, 4740, 356, 4, 972, 57100, 191208, 50716, 1472, 4, 2916, 690204, 8536230, 7788648, 578696, 4780, 4, 8748, 8590508, 396419436, 1267847188, 315135868, 6829968, 20228, 4, 26244, 107540900, 18828234948
OFFSET
1,1
COMMENTS
Table starts
.4.....12........36..........108............324.............972...........2916
.4.....28.......396.........4904..........57100..........690204........8590508
.4....120......4740.......191208........8536230.......396419436....18828234948
.4....356.....50716......7788648.....1267847188....219705087676.39711390609500
.4...1472....578696....315135868...189412482924.122284278712812
.4...4780...6829968..13106373164.28369308592126
.4..20228..77256180.539443637988
.4..68724.900837948
.4.296256
.4
LINKS
EXAMPLE
Some.solutions.for.n=5.k=3
..2..3..0....1..1..3....2..2..2....3..0..2....1..3..2....0..2..3....2..0..1
..0..3..2....2..0..3....0..3..3....2..0..3....2..2..2....3..0..2....2..1..0
..2..0..3....2..3..0....3..0..3....3..0..2....1..2..3....0..2..3....1..0..2
..2..3..0....2..1..2....0..3..3....0..3..2....1..2..3....2..3..0....3..0..0
..2..3..0....0..3..2....0..3..3....3..0..2....3..0..3....3..0..2....1..1..1
CROSSREFS
Sequence in context: A255289 A348334 A337403 * A336862 A190392 A133517
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Dec 27 2011
STATUS
approved