A222535 Number of nX2 0..1 arrays with no more than floor(nX2/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order

1, 1, 5, 16, 29, 78, 236, 638, 1515, 4345, 11927, 32187, 84684, 238656, 646520, 1771466, 4811845, 13396324, 36540256, 100927019, 277135515, 768770834, 2113207392, 5856167133, 16164388090, 44845294779, 123927192659, 344021294163

Offset

1,3

Comments

Column 2 of A222541

Links

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

Example

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

Crossrefs

Sequence in context: A299882 A212457 A134594 * A063076 A270805 A132479

Adjacent sequences: A222532 A222533 A222534 * A222536 A222537 A222538

Keyword

nonn

Author

R. H. Hardin Feb 24 2013

Status

approved