A250981 Number of (n+1)X(7+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements

17673153, 55847243498, 174911850250602, 548891857207523016, 1722239421934657361988, 5403961231550447362641701, 16956293118548007574241097692, 53204663067980474498805483728765

Offset

1,1

Comments

Column 7 of A250982

Links

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

Example

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

Crossrefs

Sequence in context: A183269 A032749 A235848 * A344631 A372694 A159192

Adjacent sequences: A250978 A250979 A250980 * A250982 A250983 A250984

Keyword

nonn

Author

R. H. Hardin, Nov 29 2014

Status

approved