A187958 Half the number of (n+2)X5 binary arrays with no 3X3 subblock having a sum equal to any horizontal or vertical neighbor 3X3 subblock sum

7744, 53728, 359488, 2292560, 16890700, 122812784, 860108472, 6116839902, 43092481644, 298860635764, 2133759439896, 15149745081538, 106412240118540, 754706717902846, 5335690343354458, 37525816010840830, 265952713606425686

Offset

1,1

Comments

Column 3 of A187964

Links

R. H. Hardin, Table of n, a(n) for n = 1..162

Example

Some solutions for 4X5 with a(1,1)=0
..0..1..1..1..0....0..0..0..0..0....0..1..1..1..0....0..0..0..1..0
..0..1..0..1..0....1..1..0..0..0....0..0..1..1..1....0..1..1..0..0
..1..0..1..1..0....1..1..0..0..1....0..0..1..1..1....0..1..0..0..1
..0..0..0..1..0....1..1..0..1..0....0..0..0..1..0....1..1..1..0..1

Crossrefs

Sequence in context: A116239 A094400 A116282 * A052050 A116064 A052070

Adjacent sequences: A187955 A187956 A187957 * A187959 A187960 A187961

Keyword

nonn

Author

R. H. Hardin Mar 16 2011

Status

approved