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A229405 Number of n X n 0..3 arrays avoiding 11 horizontally, 22 vertically, 33 antidiagonally and 00 diagonally 1
4, 163, 53538, 142475606, 3113479414050, 555943964324988272, 812793729526357032659346, 9723835061406716550009482645332, 952115739439339063251356375563511227580 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A229412
LINKS
EXAMPLE
Some solutions for n=3
..0..0..1....3..2..1....2..2..3....2..2..1....0..2..0....3..0..0....1..2..3
..3..3..1....1..3..2....3..1..0....3..1..0....0..3..1....0..2..1....2..0..3
..0..2..0....2..2..0....3..3..3....1..2..0....1..3..1....1..3..2....3..0..1
CROSSREFS
Sequence in context: A222394 A306350 A125532 * A211157 A185857 A347719
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 22 2013
STATUS
approved

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Last modified March 19 07:04 EDT 2024. Contains 370953 sequences. (Running on oeis4.)