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A253485 Number of (4+1)X(n+1) 0..2 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically 1
27000, 1066300, 44943722, 1878758740, 78770049974, 3299718630574, 138306215163096, 5795836568371696, 242904782424601668, 10179772843302464230, 426626399166621668992, 17879460458074006160518 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A253482

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=1

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

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

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

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

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

CROSSREFS

Sequence in context: A176359 A162144 A305728 * A253480 A186136 A159995

Adjacent sequences:  A253482 A253483 A253484 * A253486 A253487 A253488

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 02 2015

STATUS

approved

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Last modified June 25 09:48 EDT 2019. Contains 324347 sequences. (Running on oeis4.)