A222630 Number of nX3 0..1 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order

1, 3, 5, 34, 67, 388, 915, 4850, 12037, 63153, 160358, 836672, 2142061, 11227043, 28804656, 151800559, 389791479, 2064625690, 5304948795, 28213912362, 72561522182, 387104648245, 996738887853, 5329732448357, 13741158092254

Offset

1,2

Comments

Column 3 of A222635

Links

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

Example

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

Crossrefs

Sequence in context: A263295 A222484 A354849 * A187993 A221158 A068111

Adjacent sequences: A222627 A222628 A222629 * A222631 A222632 A222633

Keyword

nonn

Author

R. H. Hardin Feb 26 2013

Status

approved