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A199129 Number of nX4 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and no element equal to any horizontal or vertical neighbor 2
3, 12, 19, 258, 1409, 2836, 48320, 295092, 629776, 11499816, 73045294, 159683856, 3012721252, 19537447260, 43276955012, 832789320948, 5471578311520, 12222775051564, 238366172778672, 1580313985819656, 3551105861275344 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A199133

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..75

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A134965 A117554 A049714 * A257942 A063244 A281813

Adjacent sequences:  A199126 A199127 A199128 * A199130 A199131 A199132

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 03 2011

STATUS

approved

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Last modified February 26 00:08 EST 2020. Contains 332270 sequences. (Running on oeis4.)