A222634 Number of n X 7 0..1 arrays with no more than floor(n X 7/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order.

12, 121, 915, 16892, 160614, 3329090, 34323408, 762299807, 8239136941, 188448398522, 2082442612871, 48247276348290, 539302865240417, 12584194182415994, 141638011539902610, 3320361359110272916

Offset

1,1

Comments

Column 7 of A222635.

Links

R. H. Hardin, Table of n, a(n) for n = 1..40

Example

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

Crossrefs

Cf. A222635.

Sequence in context: A037097 A337202 A299823 * A018204 A176779 A098297

Adjacent sequences: A222631 A222632 A222633 * A222635 A222636 A222637

Keyword

nonn

Author

R. H. Hardin, Feb 26 2013

Status

approved