A201728 Number of nX7 0..4 arrays with rows and columns lexicographically nondecreasing and no element equal to the number of horizontal and vertical neighbors equal to itself

116, 213013, 1757594146, 15249209002599, 100953294298736546

Offset

1,1

Comments

Column 7 of A201729

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for 2X2
..0..0..0..2..3..4..4....0..0..1..2..3..4..4....0..0..0..1..3..3..3
..0..0..1..3..3..1..3....0..0..2..4..4..4..4....0..2..3..4..1..2..4

Crossrefs

Sequence in context: A035814 A284377 A009617 * A009687 A373582 A050660

Adjacent sequences: A201725 A201726 A201727 * A201729 A201730 A201731

Keyword

nonn

Author

R. H. Hardin Dec 04 2011

Status

approved