A222698 Number of nX3 0..1 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..1 order

1, 5, 9, 62, 159, 955, 2609, 15700, 43653, 265172, 745702, 4553731, 12909315, 79185348, 225776986, 1389425900, 3979529099, 24552464694, 70573224611, 436307645895, 1257776479205, 7789054758485, 22508431431008, 139583844197925

Offset

1,2

Comments

Column 3 of A222703

Links

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

Example

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

Crossrefs

Sequence in context: A284382 A143554 A222536 * A200440 A370613 A347991

Adjacent sequences: A222695 A222696 A222697 * A222699 A222700 A222701

Keyword

nonn

Author

R. H. Hardin Feb 28 2013

Status

approved