A223667 Number of nX6 0..1 arrays with rows, diagonals and antidiagonals unimodal

22, 484, 5913, 49561, 364959, 2715255, 21347949, 176196273, 1493319998, 12752674920, 108775648521, 925164714995, 7854870418554, 66655562324108, 565717490459602, 4802772296256892, 40782742978895315, 346338434126201765

Offset

1,1

Comments

Column 6 of A223669

Links

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

Example

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

Crossrefs

Sequence in context: A223737 A223635 A223720 * A223826 A223618 A223678

Adjacent sequences: A223664 A223665 A223666 * A223668 A223669 A223670

Keyword

nonn

Author

R. H. Hardin Mar 25 2013

Status

approved