A219427 Unchanging value maps: number of 7Xn binary arrays indicating the locations of corresponding elements unequal to no horizontal or antidiagonal neighbor in a random 0..2 7Xn array

1, 1897, 44857, 1842766, 65352789, 2284814260, 80311501599, 2846763071615, 101180231915225, 3593093772421047, 127477235143792772, 4521648074836617071, 160404051239506589127, 5690803494953995807634

Offset

1,2

Comments

Row 7 of A219421

Links

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

Example

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

Crossrefs

Sequence in context: A045198 A020417 A218848 * A297320 A220392 A219416

Adjacent sequences: A219424 A219425 A219426 * A219428 A219429 A219430

Keyword

nonn

Author

R. H. Hardin Nov 19 2012

Status

approved