A240782 Number of nX7 0..1 arrays with no element equal to fewer vertical neighbors than horizontal neighbors, with new values 0..1 introduced in row major order

1, 22, 472, 9581, 226532, 5228820, 121621207, 2827515311, 65742420202, 1528546759636, 35539596883248, 826313572773202, 19212201839186636, 446693206688680120, 10385838163314549709, 241475873187832394155

Offset

1,2

Comments

Column 7 of A240783

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..0..1..1..0..1..0..1....0..0..1..1..0..0..1....0..1..1..0..1..1..0
..1..1..1..0..1..0..1....0..0..1..1..0..0..0....1..1..1..0..1..1..0
..1..1..0..1..0..0..1....0..1..0..1..1..0..0....1..1..1..0..1..0..0
..1..1..0..1..0..0..1....0..1..0..1..1..0..1....0..1..1..0..1..0..1

Crossrefs

Sequence in context: A218724 A276644 A139228 * A261135 A158535 A171327

Adjacent sequences: A240779 A240780 A240781 * A240783 A240784 A240785

Keyword

nonn

Author

R. H. Hardin, Apr 12 2014

Status

approved