A222377 Number of nX6 0..3 arrays with no more than floor(nX6/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order

14, 234, 8111, 342953, 16985929, 963154789, 61522684225, 4169901076870, 296032656700259, 21407365398250792

Offset

1,1

Comments

Column 6 of A222378

Links

Table of n, a(n) for n=1..10.

Example

Some solutions for n=4
..0..0..0..0..1..0....0..0..0..1..0..2....0..0..0..0..0..1....0..0..0..0..1..0
..0..0..0..2..1..2....0..0..0..0..0..2....0..0..0..0..1..2....0..0..0..0..2..3
..0..0..0..0..1..1....0..0..0..0..2..1....0..0..0..1..2..2....0..0..0..0..1..3
..0..0..0..0..0..3....0..0..0..0..0..3....0..0..0..1..1..2....0..0..0..0..3..1

Crossrefs

Sequence in context: A230346 A280559 A305862 * A220502 A256462 A166774

Adjacent sequences: A222374 A222375 A222376 * A222378 A222379 A222380

Keyword

nonn

Author

R. H. Hardin Feb 17 2013

Status

approved