A225019 Number of (n+1)X(n+1) 0..2 matrices with each 2X2 permanent equal

81, 1935, 117959, 68599847, 61256508583, 377600972329977, 3848918646053092273, 232902549373982083370091, 26631802795042217377560514459, 15822211869785345098476275119070159

Offset

1,1

Comments

Diagonal of A225027

Links

R. H. Hardin, Table of n, a(n) for n = 1..11

Example

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

Crossrefs

Sequence in context: A223206 A296650 A233371 * A224312 A224376 A237957

Adjacent sequences: A225016 A225017 A225018 * A225020 A225021 A225022

Keyword

nonn

Author

R. H. Hardin Apr 24 2013

Status

approved