A251989 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 or 5

2735, 20011, 20011, 151635, 231559, 151635, 1182549, 3069283, 3069283, 1182549, 9375901, 43957515, 79998655, 43957515, 9375901, 75153161, 663814741, 2351304453, 2351304453, 663814741, 75153161, 607579255, 10354206421

Offset

1,1

Comments

Table starts

.......2735.........20011...........151635...........1182549............9375901

......20011........231559..........3069283..........43957515..........663814741

.....151635.......3069283.........79998655........2351304453........73509019463

....1182549......43957515.......2351304453......143941074215......9220975438331

....9375901.....663814741......73509019463.....9220975438331...1193233002253007

...75153161...10354206421....2356741934027...598720936854481.155551233646772281

..607579255..164646337261...76367982838785.39038339681025033

.4944443285.2648489572393.2486060084557113

Links

R. H. Hardin, Table of n, a(n) for n = 1..60

Example

Some solutions for n=1 k=4
..0..0..0..2..0..0....0..0..0..0..0..2....0..0..0..2..0..2....0..0..0..2..0..2
..0..0..0..2..2..2....0..0..2..0..2..1....0..0..0..2..0..0....2..2..2..0..2..2
..0..0..0..0..2..2....2..2..0..0..0..0....2..0..0..0..0..2....2..2..2..0..0..0

Crossrefs

Sequence in context: A145647 A251946 A045155 * A251985 A297512 A297726

Adjacent sequences: A251986 A251987 A251988 * A251990 A251991 A251992

Keyword

nonn,tabl

Author

R. H. Hardin, Dec 12 2014

Status

approved