A185804 Number of (n+1)X7 0..3 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace

1567936, 2091689856, 1501824774848, 1288126250997184, 1064219916625097376

Offset

1,1

Comments

Column 6 of A185807

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for 3X7
..0..0..2..0..0..0..0....0..0..0..2..3..1..0....0..0..0..0..2..2..3
..0..0..0..1..3..2..2....0..0..0..0..1..1..0....0..0..0..1..1..1..1
..0..0..0..0..3..1..2....0..0..0..0..3..3..0....0..0..0..0..1..1..2

Crossrefs

Sequence in context: A250517 A151620 A186920 * A252881 A183669 A234830

Adjacent sequences: A185801 A185802 A185803 * A185805 A185806 A185807

Keyword

nonn

Author

R. H. Hardin Feb 04 2011

Status

approved