A218848 Unmatched value maps: number of 7Xn binary arrays indicating the locations of corresponding elements not equal to any horizontal or antidiagonal neighbor in a random 0..1 7Xn array.

1, 1897, 44857, 1842766, 58634265, 1948262831, 64756459689, 2158022097024, 72005693397249, 2401007959333366, 80020956182679940, 2666324484059219950, 88840855997887519080, 2960140859490010750266, 98629740626776522570263

Offset

1,2

Comments

Row 7 of A218842

Links

Table of n, a(n) for n=1..15.

Example

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

Crossrefs

Sequence in context: A035869 A045198 A020417 * A219427 A297320 A220392

Adjacent sequences: A218845 A218846 A218847 * A218849 A218850 A218851

Keyword

nonn

Author

R. H. Hardin, Nov 07 2012

Status

approved