A223979 Number of 6Xn 0..2 arrays with rows and antidiagonals unimodal

729, 531441, 70779056, 2809740785, 55803232969, 715985189481, 6766457318128, 50783406166411, 317861952928894, 1716630787916775, 8199247742192030, 35287118527617297, 138825002272586304, 505004840634444527

Offset

1,1

Comments

Row 6 of A223975

Links

R. H. Hardin, Table of n, a(n) for n = 1..144

R. H. Hardin, Empirical polynomial of degree 24

Formula

Empirical polynomial of degree 24 (see link above)

Example

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

Crossrefs

Sequence in context: A228976 A016950 A223793 * A223574 A184692 A272066

Adjacent sequences: A223976 A223977 A223978 * A223980 A223981 A223982

Keyword

nonn

Author

R. H. Hardin Mar 30 2013

Status

approved