A219820 - OEIS

A219820

Number of 6Xn arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 6Xn array.

21, 106, 987, 7689, 62341, 510090, 3967857, 29319493, 208512645, 1441204373, 9713994355, 63854007986, 409453128441, 2564303057258, 15708490300528, 94235635007292, 554048642536232, 3194247904837607, 18067158627074107

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

OFFSET

1,1

COMMENTS

Row 6 of A219816

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..20

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

CROSSREFS

Sequence in context: A226742 A077400 A041854 * A071333 A222347 A039611

Adjacent sequences: A219817 A219818 A219819 * A219821 A219822 A219823

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 28 2012

STATUS

approved