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A253480 Number of (n+1)X(4+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, 1069400, 44878810, 1878758740, 78704951512, 3297669520142, 138204642567680, 5791515989673804, 242710135725239668, 10171279006748889244, 426252400904323368342, 17863104607113877927270 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A253482

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A162144 A305728 A253485 * A186136 A159995 A253339

Adjacent sequences:  A253477 A253478 A253479 * A253481 A253482 A253483

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 02 2015

STATUS

approved

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Last modified June 25 12:01 EDT 2019. Contains 324352 sequences. (Running on oeis4.)