A222521 Number of nX7 0..3 arrays with exactly floor(nX7/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order

10, 0, 1318, 221659, 3661130, 403328822, 13336494115, 2623707559240, 110441080391104, 34273414749633330, 1654698452610132075, 547206591335521794299, 26849189064917836823060, 8964964956162265960981942

Offset

1,1

Comments

Column 7 of A222522

Links

Table of n, a(n) for n=1..14.

Example

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

Crossrefs

Sequence in context: A287129 A287190 A277926 * A068159 A108695 A265373

Adjacent sequences: A222518 A222519 A222520 * A222522 A222523 A222524

Keyword

nonn

Author

R. H. Hardin Feb 23 2013

Status

approved