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A206952 Number of nX3 0..2 arrays avoiding the pattern z z+1 z in any row, column or nw-to-se diagonal 1
25, 625, 11804, 218637, 4107593, 77359677, 1455935650, 27394495918, 515466231841, 9699443092866, 182512279469866, 3434286824366669, 64622121983338176, 1215978582236350201, 22880768560680353074 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A206957

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A207203 A206858 A068180 * A206729 A207353 A207984

Adjacent sequences: A206949 A206950 A206951 * A206953 A206954 A206955

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 13 2012

STATUS

approved

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Last modified November 28 22:51 EST 2022. Contains 358421 sequences. (Running on oeis4.)