A207987 Number of nX6 0..2 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically

529, 279841, 95527856, 31638012071, 10629041648848, 3578849222737632, 1204494622138201455, 405333113827258812431, 136403423286792425969870, 45903034302323213277967472, 15447463885373895264608054021

Offset

1,1

Comments

Column 6 of A207989

Links

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

Example

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

Crossrefs

Sequence in context: A034987 A206861 A206955 * A207219 A213700 A013773

Adjacent sequences: A207984 A207985 A207986 * A207988 A207989 A207990

Keyword

nonn

Author

R. H. Hardin Feb 22 2012

Status

approved