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A187674 Number of (n+2)X3 0..3 arrays with no 2X2 subblock sum equal to any diagonal or antidiagonal neighbor 2X2 subblock sum 1
192960, 9136352, 433713824, 20581985952, 976666568320, 46345923682624, 2199263749025344, 104362111586399568, 4952316502117068152, 235003286495369796248, 11151658949655222403240, 529181949354720821420856 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 1 of A187676

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..136

EXAMPLE

Some solutions for 4X3

..0..0..2....0..2..0....0..0..0....0..0..0....2..2..2....2..2..0....2..2..0

..0..2..2....2..2..2....2..0..0....0..0..2....2..0..0....0..2..0....2..2..2

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

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

CROSSREFS

Sequence in context: A270971 A234455 A187676 * A252950 A250689 A234196

Adjacent sequences:  A187671 A187672 A187673 * A187675 A187676 A187677

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 12 2011

STATUS

approved

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Last modified January 22 20:00 EST 2022. Contains 350504 sequences. (Running on oeis4.)