A219426 Unchanging value maps: number of 6Xn binary arrays indicating the locations of corresponding elements unequal to no horizontal or antidiagonal neighbor in a random 0..2 6Xn array

1, 616, 9573, 230726, 4934366, 104434119, 2222033208, 47581843251, 1020963792078, 21891250379251, 469088799364095, 10050616587252213, 215366263056062190, 4615153893061065333, 98898611652123318575

Offset

1,2

Comments

Row 6 of A219421

Links

R. H. Hardin, Table of n, a(n) for n = 1..22

Example

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

Crossrefs

Sequence in context: A252252 A260367 A218847 * A297319 A220391 A219415

Adjacent sequences: A219423 A219424 A219425 * A219427 A219428 A219429

Keyword

nonn

Author

R. H. Hardin Nov 19 2012

Status

approved