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A198708 T(n,k)=Number of nXk 0..4 arrays with values 0..4 introduced in row major order and each element equal to at least one horizontal or vertical neighbor 8
0, 1, 1, 1, 3, 1, 2, 14, 14, 2, 3, 76, 185, 76, 3, 6, 488, 3893, 3893, 488, 6, 11, 3508, 95209, 322230, 95209, 3508, 11, 23, 27422, 2654693, 30407251, 30407251, 2654693, 27422, 23, 47, 227045, 77622801, 3075124662, 10239497407, 3075124662, 77622801, 227045 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

Table starts

...0........1...........1..............2................3................6

...1........3..........14.............76..............488.............3508

...1.......14.........185...........3893............95209..........2654693

...2.......76........3893.........322230.........30407251.......3075124662

...3......488.......95209.......30407251......10239497407....3588013895024

...6.....3508.....2654693.....3075124662....3588013895024.4285681886701131

..11....27422....77622801...316137386807.1259339424693241

..23...227045..2332544112.32741782389619

..47..1950662.70818414642

.103.17146596

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..71

EXAMPLE

Some solutions with all values 0 to 4 for n=4 k=4

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

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

..4..4..0..0....2..3..3..1....2..2..0..0....1..3..3..2....4..4..0..0

..3..3..2..2....2..2..4..4....3..3..4..4....3..3..4..4....3..3..0..0

CROSSREFS

Column 1 is A198662

Sequence in context: A199149 A198669 A171059 * A198627 A198654 A198661

Adjacent sequences:  A198705 A198706 A198707 * A198709 A198710 A198711

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Oct 29 2011

STATUS

approved

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Last modified September 18 10:03 EDT 2020. Contains 337166 sequences. (Running on oeis4.)