A224049 Number of nX7 0..3 arrays with rows and columns unimodal and antidiagonals nondecreasing

1163, 180821, 7655477, 153482649, 1999959111, 20096076442, 169750613182, 1265415997425, 8609328529478, 54810160645347, 332129717908612, 1933871450604161, 10857958349352084, 58782328259016090

Offset

1,1

Comments

Column 7 of A224050

Links

Table of n, a(n) for n=1..14.

Example

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

Crossrefs

Sequence in context: A223863 A223986 A224063 * A224280 A224203 A223761

Adjacent sequences: A224046 A224047 A224048 * A224050 A224051 A224052

Keyword

nonn

Author

R. H. Hardin Apr 01 2013

Status

approved