A198980 Number of nX6 0..5 arrays with values 0..5 introduced in row major order and no element equal to any horizontal or vertical neighbor

52, 174454, 1112962873, 7267830860056, 47495195899845037, 310387893630465965693, 2028430770889558380053172, 13256095277348005849607178346, 86630544487196927129344081838138

Offset

1,1

Comments

Column 6 of A198982

Links

R. H. Hardin, Table of n, a(n) for n = 1..28

Example

Some solutions with all values from 0 to 5 for n=4
..0..1..0..2..0..2....0..1..0..1..0..1....0..1..0..2..0..3....0..1..0..2..3..4
..1..0..1..0..3..1....1..0..1..0..2..0....1..0..1..0..2..4....1..0..1..0..4..0
..0..3..0..1..4..5....0..3..0..1..4..2....0..3..0..1..4..3....0..3..0..1..0..2
..3..0..1..2..1..0....3..0..1..0..5..1....3..0..1..4..2..5....3..0..1..0..1..5

Crossrefs

Sequence in context: A211252 A208470 A070908 * A198721 A198912 A208300

Adjacent sequences: A198977 A198978 A198979 * A198981 A198982 A198983

Keyword

nonn

Author

R. H. Hardin Nov 01 2011

Status

approved