A222905 Number of nX7 0..3 arrays with no more than floor(nX7/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order

17, 1710, 82020, 21064292, 1616042692, 577820456398, 51666240687220, 19807159813457951, 1817220105168370585, 706854001296049850823, 65258971099531300247508, 25532711765112846282295184

Offset

1,1

Comments

Column 7 of A222906

Links

R. H. Hardin, Table of n, a(n) for n = 1..25

Example

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

Crossrefs

Sequence in context: A227887 A144571 A242228 * A071826 A055414 A156675

Adjacent sequences: A222902 A222903 A222904 * A222906 A222907 A222908

Keyword

nonn

Author

R. H. Hardin Mar 09 2013

Status

approved