A185747 Number of (n+1)X7 binary arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace

1000, 62112, 2237680, 86568360, 3364965408, 130602553784, 5075186680192, 197100662468008, 7655862674452520, 297368484380040776, 11550455726950210912, 448643489297533349952, 17426238812878704288568

Offset

1,1

Comments

Column 6 of A185750

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

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

Crossrefs

Sequence in context: A250449 A117690 A186936 * A234787 A029799 A029779

Adjacent sequences: A185744 A185745 A185746 * A185748 A185749 A185750

Keyword

nonn

Author

R. H. Hardin Feb 01 2011

Status

approved