A222695 Number of 6Xn 0..2 arrays with exactly floor(6Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order

0, 1120, 32296, 723244, 20259516, 589802909, 18253875506, 587817545724, 19654502530302, 676444220700614, 23808229868262298, 851786780144746749, 30835345886767300972, 1125619132950192066196, 41335747933044787972212

Offset

1,2

Comments

Row 6 of A222690

Links

R. H. Hardin, Table of n, a(n) for n = 1..16

Example

Some solutions for n=3
..0..0..0....0..0..0....0..1..1....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..0....0..0..0....1..0..2....0..0..0....0..0..1....0..0..1....0..0..1
..0..0..0....0..1..1....0..0..0....1..0..0....0..2..2....0..0..1....2..0..1
..0..1..2....0..0..1....0..0..0....0..0..1....0..2..1....2..1..1....1..2..2
..2..1..2....0..2..2....0..0..0....0..0..2....0..1..1....1..1..1....1..2..2
..1..1..0....2..2..2....0..0..1....1..2..2....1..1..1....1..2..2....2..2..2

Crossrefs

Sequence in context: A237689 A032777 A234445 * A032779 A028464 A225995

Adjacent sequences: A222692 A222693 A222694 * A222696 A222697 A222698

Keyword

nonn

Author

R. H. Hardin Feb 28 2013

Status

approved