A223100 Number of nX4 0..2 arrays with exactly floor(nX4/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order

6, 225, 12330, 737254, 45578462, 2870336499, 183046326118, 11782118531553, 763845214942942, 49805175047789058, 3262672413391143868, 214565889472648338996, 14157088668977376429350, 936715566405468604349563

Offset

1,1

Comments

Column 4 of A223104

Links

R. H. Hardin, Table of n, a(n) for n = 1..163

Example

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

Crossrefs

Sequence in context: A054324 A117255 A130644 * A233142 A166502 A173083

Adjacent sequences: A223097 A223098 A223099 * A223101 A223102 A223103

Keyword

nonn

Author

R. H. Hardin Mar 14 2013

Status

approved