A205887 Number of (n+1)X(n+1) 0..2 arrays with 2X2 subblock determinants differing from horizontal neighbors and permanents differing from vertical neighbors

81, 6020, 1476942, 1076391970, 2458450081192, 17941121077647948

Offset

1,1

Comments

Diagonal of A205894

Links

Table of n, a(n) for n=1..6.

Example

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

Crossrefs

Sequence in context: A060349 A212706 A036354 * A205199 A250612 A228974

Adjacent sequences: A205884 A205885 A205886 * A205888 A205889 A205890

Keyword

nonn

Author

R. H. Hardin Feb 01 2012

Status

approved