A255083 Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0

108, 522, 1824, 9484, 70938, 753882, 10823026, 176178559, 3305817620, 82918328052, 2746333257006, 118710393614388, 6794688877081612, 469187907165707478, 38126739957364378305, 4062963394164596026433

Offset

1,1

Comments

Diagonal of A255091

Links

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

Example

Some solutions for n=4
..1..1..1..0..1..1....0..1..0..1..0..1....1..1..1..1..0..1....1..1..0..1..1..1
..1..1..0..1..1..1....1..1..0..0..1..1....1..1..1..0..0..1....1..0..0..1..1..1
..1..0..1..1..0..1....0..0..1..1..0..1....1..1..0..0..1..1....1..0..1..1..1..1
..1..1..1..0..1..1....1..0..1..0..1..0....1..1..1..1..1..1....1..1..1..1..1..0
..1..1..0..1..1..0....0..1..0..1..1..1....0..0..1..1..1..1....1..1..1..1..0..0
..1..0..1..1..0..1....1..0..1..0..0..1....0..1..1..1..0..0....1..1..1..1..1..1

Crossrefs

Cf. A255091

Sequence in context: A202428 A224526 A251270 * A063880 A059436 A233685

Adjacent sequences: A255080 A255081 A255082 * A255084 A255085 A255086

Keyword

nonn

Author

R. H. Hardin, Feb 14 2015

Status

approved