A201727 Number of nX6 0..4 arrays with rows and columns lexicographically nondecreasing and no element equal to the number of horizontal and vertical neighbors equal to itself

83, 64018, 144262866, 299927801278, 463016032498283, 545947219624185244

Offset

1,1

Comments

Column 6 of A201729

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for n=2
..0..0..1..4..4..4....0..2..3..4..4..4....0..0..1..2..3..4....1..2..3..4..4..4
..3..3..4..1..3..3....0..4..1..2..3..4....4..4..2..3..3..1....2..1..3..1..4..4

Crossrefs

Sequence in context: A097839 A268987 A087189 * A116263 A287686 A087532

Adjacent sequences: A201724 A201725 A201726 * A201728 A201729 A201730

Keyword

nonn

Author

R. H. Hardin Dec 04 2011

Status

approved