A183842 Number of (n+1)X7 binary arrays with each element of every 2X2 subblock being the sum mod 2 of two others

2050, 41430, 831331, 17250758, 355075734, 7377050305, 152705583143, 3170254841114, 65722388742561, 1363817555468924, 28285832753097447, 586851829424809393, 12173180857492937881, 252540758735572948701

Offset

1,1

Comments

Column 6 of A183845

Links

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

Example

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

Crossrefs

Sequence in context: A174752 A045059 A224119 * A253711 A168176 A224728

Adjacent sequences: A183839 A183840 A183841 * A183843 A183844 A183845

Keyword

nonn

Author

R. H. Hardin Jan 07 2011

Status

approved