A183789 Half the number of (n+1)X7 0..2 arrays with no 2X2 subblock having sum 4

503676, 253372446, 124516635830, 61615880574766, 30424632455651757, 15033760617564577257, 7426828822889981226524, 3669246745844998053514738, 1812745552132801952938026578, 895574493615900816704817147361

Offset

1,1

Comments

Column 6 of A183792

Links

R. H. Hardin, Table of n, a(n) for n = 1..84

Example

Some solutions for 3X7
..0..0..0..0..0..0..1....0..0..0..0..0..0..0....0..0..0..0..0..1..2
..0..0..0..0..0..0..1....0..0..0..0..0..1..0....0..0..0..0..0..1..1
..2..1..0..1..0..0..0....2..1..0..1..2..0..0....2..1..1..2..1..0..0

Crossrefs

Sequence in context: A157759 A227110 A187313 * A203548 A195525 A124945

Adjacent sequences: A183786 A183787 A183788 * A183790 A183791 A183792

Keyword

nonn

Author

R. H. Hardin Jan 07 2011

Status

approved