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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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 02 2015
STATUS
approved

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Last modified July 19 22:34 EDT 2024. Contains 374441 sequences. (Running on oeis4.)