A254849 Number of (n+2)X(3+2) 0..1 arrays with no 3x3 subblock diagonal sum one and no antidiagonal sum two

1632, 2916, 5904, 13456, 34176, 87616, 216000, 518400, 1246464, 3069504, 7729920, 19501056, 48484800, 118722816, 289380096, 710968896, 1766830464, 4410022464, 10962427392, 27051038784, 66462004800, 163578184704, 404630224128

Offset

1,1

Comments

Column 3 of A254854

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A328452 A202985 A063891 * A237923 A297659 A219007

Adjacent sequences: A254846 A254847 A254848 * A254850 A254851 A254852

Keyword

nonn

Author

R. H. Hardin, Feb 08 2015

Status

approved