A222773 Number of 5Xn 0..1 arrays with exactly floor(5Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order

0, 48, 301, 3431, 19766, 256546, 1570588, 21526008, 136549058, 1916013454, 12429454430, 176824724591, 1163475046332, 16694274193142, 110869265032135, 1600019787081011, 10694449471174787, 154977656102006006

Offset

1,2

Comments

Row 5 of A222769

Links

R. H. Hardin, Table of n, a(n) for n = 1..39

Example

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

Crossrefs

Sequence in context: A281234 A215262 A097639 * A211732 A211743 A211752

Adjacent sequences: A222770 A222771 A222772 * A222774 A222775 A222776

Keyword

nonn

Author

R. H. Hardin Mar 05 2013

Status

approved