A222453 Number of nX5 0..1 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order

4, 10, 27, 426, 1847, 16440, 84558, 910358, 4757427, 51324484, 271866564, 2984245628, 15890235207, 175650675430, 939482925840, 10439882627616, 56035969028768, 625001788261676, 3364621225556746, 37635020888605163

Offset

1,1

Comments

Column 5 of A222456

Links

R. H. Hardin, Table of n, a(n) for n = 1..121

Example

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

Crossrefs

Sequence in context: A027067 A050262 A295208 * A186278 A367437 A367124

Adjacent sequences: A222450 A222451 A222452 * A222454 A222455 A222456

Keyword

nonn

Author

R. H. Hardin Feb 20 2013

Status

approved