A223668 Number of nX7 0..1 arrays with rows, diagonals and antidiagonals unimodal

29, 841, 12577, 119150, 920106, 6789502, 51831694, 418107416, 3535212700, 30760010124, 270819014018, 2389382612136, 21054370910762, 185252005692892, 1628826042317036, 14320554615413076, 125935880053887644

Offset

1,1

Comments

Column 7 of A223669

Links

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

Example

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

Crossrefs

Sequence in context: A171334 A097782 A223643 * A223636 A223619 A223679

Adjacent sequences: A223665 A223666 A223667 * A223669 A223670 A223671

Keyword

nonn

Author

R. H. Hardin Mar 25 2013

Status

approved