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A209969 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays containing all values 0..3 with every 2X2 subblock having one or two distinct values, and new values 0..3 introduced in row major order 9
0, 0, 0, 9, 26, 9, 162, 665, 665, 162, 1845, 13529, 25435, 13529, 1845, 17262, 235614, 870686, 870686, 235614, 17262, 144945, 3745144, 27112487, 53890394, 27112487, 3745144, 144945, 1138194, 56080379, 795773818, 3143493049, 3143493049 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Table starts

.......0.........0............9.............162...............1845

.......0........26..........665...........13529.............235614

.......9.......665........25435..........870686...........27112487

.....162.....13529.......870686........53890394.........3143493049

....1845....235614.....27112487......3143493049.......351689776895

...17262...3745144....795773818....176163769267.....38303320167422

..144945..56080379..22419183624...9585247795332...4082540189707757

.1138194.806021187.613401570788.510324389383430.427998742911795767

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..144

EXAMPLE

Some solutions for n=4 k=3

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

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

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

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

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

CROSSREFS

Sequence in context: A038534 A117755 A144114 * A144701 A255107 A022421

Adjacent sequences:  A209966 A209967 A209968 * A209970 A209971 A209972

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Mar 16 2012

STATUS

approved

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Last modified June 15 09:54 EDT 2021. Contains 345048 sequences. (Running on oeis4.)