A209526 Number of nX7 0..7 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..7 introduced in row major order

877, 4054358, 71519658191, 2002617518101082, 64398780661554524050, 2141993311657850070458667

Offset

1,1

Comments

Column 7 of A209527

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for n=5
..0..0..0..0..0..1..0....0..0..0..0..0..0..0....0..0..0..0..1..2..0
..1..2..1..2..1..2..0....1..2..1..3..1..2..1....1..2..1..3..1..4..4
..1..3..2..4..2..0..1....2..3..3..0..0..0..0....0..0..2..1..4..2..0
..4..1..1..2..0..3..3....0..0..1..1..2..3..1....2..3..0..2..2..0..1
..0..0..2..3..3..2..0....1..4..0..2..0..2..2....1..2..2..1..3..0..3

Crossrefs

Sequence in context: A273657 A188391 A209464 * A208307 A208787 A208587

Adjacent sequences: A209523 A209524 A209525 * A209527 A209528 A209529

Keyword

nonn

Author

R. H. Hardin Mar 10 2012

Status

approved