A185796 Number of (n+1)X8 binary arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum

4356, 8320, 18616, 59944, 149828, 441004, 1091308, 3629540, 9151956, 29663392, 74544872, 255953372, 646804184, 2216610520, 5586633244, 19681657576, 49743175552, 176195058308, 444048959908, 1593418221824, 4026932301548

Offset

1,1

Comments

Column 7 of A185798

Links

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

Example

Some solutions for 3X8
..0..0..0..1..1..0..1..0....1..1..0..0..1..1..0..0....0..1..1..1..1..1..1..0
..1..1..0..1..1..0..0..1....1..1..1..1..1..1..0..1....0..1..0..0..1..1..0..0
..0..1..0..0..0..0..0..0....1..0..0..1..1..0..0..1....1..1..0..0..0..0..0..0

Crossrefs

Sequence in context: A223378 A239193 A068292 * A250817 A154084 A285040

Adjacent sequences: A185793 A185794 A185795 * A185797 A185798 A185799

Keyword

nonn

Author

R. H. Hardin Feb 04 2011

Status

approved