A224178 - OEIS

A224178

Number of 7Xn 0..3 arrays with rows and antidiagonals unimodal and columns nondecreasing

120, 14400, 794220, 24197608, 468021427, 6360047093, 65713691148, 549557637814, 3906417081652, 24494943831322, 139244456386154, 731876847737254, 3607100658268390, 16837953991281924

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Row 7 of A224173

LINKS

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

EXAMPLE

Some solutions for n=3

..1..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0

..2..0..0....0..0..1....0..2..0....0..0..0....2..2..0....0..0..0....0..0..0

..2..0..0....0..0..1....1..2..0....0..0..0....2..2..0....0..0..0....0..0..0

..2..1..0....0..2..2....1..2..1....1..0..0....2..3..0....0..0..1....0..2..1

..2..2..1....0..3..2....1..3..2....1..1..1....2..3..0....0..2..1....1..3..1

..2..2..3....0..3..2....3..3..3....1..1..2....2..3..0....0..2..1....3..3..1

..3..3..3....2..3..3....3..3..3....1..3..3....2..3..2....1..3..3....3..3..2

CROSSREFS

Sequence in context: A135379 A296913 A059063 * A223870 A224390 A223992

Adjacent sequences: A224175 A224176 A224177 * A224179 A224180 A224181

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 31 2013

STATUS

approved