A201726 - OEIS

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A201726

Number of nX5 0..4 arrays with rows and columns lexicographically nondecreasing and no element equal to the number of horizontal and vertical neighbors equal to itself.

1

56, 16493, 9603489, 4720850001, 1692459595971, 463016032498283, 100953294298736546, 18122671914754530341, 2749005920875643617934, 359691065136570782416660, 41268528292416431754552427

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

OFFSET

1,1

COMMENTS

Column 5 of A201729

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..21

EXAMPLE

Some solutions for n=2

..0..0..0..1..4....0..0..1..3..3....1..2..3..4..4....0..1..2..3..4

..2..2..3..4..1....0..0..4..2..3....4..1..3..4..4....0..3..3..3..1

CROSSREFS

Sequence in context: A059073 A246632 A289204 * A158362 A227053 A115469

Adjacent sequences: A201723 A201724 A201725 * A201727 A201728 A201729

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 04 2011

STATUS

approved