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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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 12 2011
STATUS
approved

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Last modified July 19 15:03 EDT 2024. Contains 374410 sequences. (Running on oeis4.)