A206899 Number of nX7 0..3 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal

14124, 199487376, 1991325229362, 20501676381643219, 208677027839980986946, 2129766555218823044199240, 21727183867324671091396681434, 221684539089233520949913971903568, 2261818950700857231940469275086574640

Offset

1,1

Comments

Column 7 of A206900

Links

R. H. Hardin, Table of n, a(n) for n = 1..10

Example

Some solutions for n=4
..2..3..2..0..1..3..1....2..1..2..0..0..1..3....1..3..2..0..0..0..0
..1..1..0..2..1..3..3....0..0..1..3..0..2..0....1..0..1..3..3..3..2
..1..2..0..2..2..1..2....3..0..2..0..3..1..1....3..0..3..0..2..0..2
..0..0..1..0..2..2..0....2..0..2..0..1..0..3....2..3..0..0..0..3..2

Crossrefs

Sequence in context: A215019 A206845 A206837 * A207289 A249192 A204282

Adjacent sequences: A206896 A206897 A206898 * A206900 A206901 A206902

Keyword

nonn

Author

R. H. Hardin Feb 13 2012

Status

approved