A251248 Number of (n+1)X(7+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements less than the minimum of its antidiagonal elements

24095475, 91345992921, 345878548314469, 1309640978922956217, 4958824382557190011939, 18776074467676820865893649, 71093648993125363900542904561, 269188685349250291174788288004161

Offset

1,1

Comments

Column 7 of A251249

Links

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

Example

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

Crossrefs

Sequence in context: A234342 A104922 A058323 * A135954 A203260 A268290

Adjacent sequences: A251245 A251246 A251247 * A251249 A251250 A251251

Keyword

nonn

Author

R. H. Hardin, Dec 01 2014

Status

approved