A209828 Number of (n+1)X8 0..2 arrays with every 2X2 subblock having one or two distinct values, and new values 0..2 introduced in row major order

181178, 52089776, 15846003427, 4989831357191, 1591829337311006, 510927200467908535, 164459337509857331548, 53009059712073526189009, 17097259777735866249288772, 5516207267048868165666733764

Offset

1,1

Comments

Column 7 of A209829

Links

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

Example

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

Crossrefs

Sequence in context: A190380 A235716 A274365 * A133541 A145536 A249959

Adjacent sequences: A209825 A209826 A209827 * A209829 A209830 A209831

Keyword

nonn

Author

R. H. Hardin Mar 13 2012

Status

approved