A185989 1/128 the number of (n+2)X7 binary arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace

876, 52966, 1739442, 64582504, 2340935640, 86146689788, 3151659956721, 115518814872268, 4232611015536753, 155094173345238861, 5682960561169751651, 208236239201648689372, 7630223129025671000970, 279587941557596275909471

Offset

1,1

Comments

Column 5 of A185993

Links

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

Example

Some solutions for 4X7
..0..1..1..1..1..1..0....0..1..0..0..0..1..0....0..0..1..1..1..0..0
..0..0..0..0..0..1..1....0..0..0..1..1..1..0....0..0..1..0..1..1..1
..0..0..0..0..0..1..0....0..0..0..1..1..1..1....0..0..0..1..1..1..1
..0..0..0..0..1..1..0....0..1..0..1..0..0..0....0..1..0..0..0..1..1

Crossrefs

Sequence in context: A065700 A297511 A297725 * A190930 A209743 A346900

Adjacent sequences: A185986 A185987 A185988 * A185990 A185991 A185992

Keyword

nonn

Author

R. H. Hardin Feb 08 2011

Status

approved