A223018 Number of 7Xn 0..1 arrays with no more than floor(7Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order

64, 1044, 14040, 360347, 4804753, 145478406, 2073830655, 66509093374, 985479740720, 32475865653768, 492376017743531, 16475005198528111, 253520938675980217, 8564078592723045087, 133132956579249054833

Offset

1,1

Comments

Row 7 of A223012

Links

R. H. Hardin, Table of n, a(n) for n = 1..27

Example

Some solutions for n=3
..0..0..0....0..0..1....0..0..0....0..0..0....0..0..1....0..0..1....0..1..1
..0..0..1....1..1..0....0..0..1....1..0..0....0..0..0....1..0..0....0..1..1
..1..1..0....0..1..0....0..1..0....1..0..0....0..0..0....1..0..0....1..0..0
..1..0..0....0..1..1....1..1..1....0..0..0....0..0..1....0..0..1....0..1..1
..0..0..0....1..1..1....0..1..1....0..0..0....0..0..0....0..1..1....1..1..1
..0..0..0....1..1..1....1..1..1....0..0..0....0..0..0....1..1..1....1..1..1
..0..1..1....1..1..1....1..1..0....1..1..0....1..1..1....1..1..1....1..1..1

Crossrefs

Sequence in context: A230972 A232958 A231952 * A221247 A280603 A301322

Adjacent sequences: A223015 A223016 A223017 * A223019 A223020 A223021

Keyword

nonn

Author

R. H. Hardin Mar 11 2013

Status

approved