A223741 Number of nX7 0..2 arrays with rows, columns, diagonals and antidiagonals unimodal

239, 57121, 4207089, 129982953, 2289596121, 28017383049, 268717054875, 2171612995939, 15433289999394, 98940871306124, 581277319267903, 3162355311990371, 16049547130078535

Offset

1,1

Comments

Column 7 of A223742

Links

Table of n, a(n) for n=1..13.

Example

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

Crossrefs

Sequence in context: A163052 A254298 A181855 * A223724 A223788 A223830

Adjacent sequences: A223738 A223739 A223740 * A223742 A223743 A223744

Keyword

nonn

Author

R. H. Hardin Mar 26 2013

Status

approved