A222499 Number of nX7 0..3 arrays with exactly floor(nX7/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order

10, 196, 3964, 524135, 15602065, 2414051256, 126014950356, 30034440049509, 1972681885257856, 533461955577978046, 36293583914174844164

Offset

1,1

Comments

Column 7 of A222500

Links

Table of n, a(n) for n=1..11.

Example

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

Crossrefs

Sequence in context: A239769 A152561 A224298 * A097127 A249846 A211419

Adjacent sequences: A222496 A222497 A222498 * A222500 A222501 A222502

Keyword

nonn

Author

R. H. Hardin Feb 23 2013

Status

approved