A251401 Number of (n+1)X(7+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements

1856748750, 61144538351375, 1996093452861010528, 65265944559607354012467, 2133718605852583377537309624, 69758457677840521663637000916478, 2280638230704458493043162111553219014

Offset

1,1

Comments

Column 7 of A251402

Links

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

Example

Some solutions for n=1
..0..0..0..0..2..1..3..3....0..0..0..0..1..0..2..2....0..0..0..0..0..2..3..1
..0..0..0..2..0..2..3..2....0..0..0..0..1..1..1..3....0..0..0..2..2..1..2..1

Crossrefs

Sequence in context: A071371 A052094 A256123 * A325900 A251282 A015429

Adjacent sequences: A251398 A251399 A251400 * A251402 A251403 A251404

Keyword

nonn

Author

R. H. Hardin, Dec 02 2014

Status

approved