A185484 Number of (n+1)X7 binary arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant

1832, 73094, 1923780, 59486818, 1723639416, 51354095605, 1513130455943, 44794190542169, 1323525925470463, 39137379574959336, 1156933531645734032, 34204609315029971150, 1011198353006650460242, 29894979888370298618687

Offset

1,1

Comments

Column 6 of A185487

Links

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

Example

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

Crossrefs

Sequence in context: A054813 A320720 A186899 * A133539 A234492 A100970

Adjacent sequences: A185481 A185482 A185483 * A185485 A185486 A185487

Keyword

nonn

Author

R. H. Hardin Jan 28 2011

Status

approved