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A198912
Number of n X 6 0..7 arrays with values 0..7 introduced in row major order and no element equal to any horizontal or vertical neighbor.
2
52, 313132, 13088156547, 769126451071174, 46891073386615240710, 2869765342757082981876352, 175702802690666247458883923440, 10757955551509190096324218697545253, 658692627650592744502193427291859810016, 40330729100674101491606403206098933746439983
OFFSET
1,1
LINKS
EXAMPLE
Some solutions with values 0 to 7 for n=3
..0..1..0..2..3..4....0..1..0..2..3..4....0..1..2..1..3..2....0..1..2..1..3..1
..1..0..1..5..0..6....1..0..2..5..4..0....1..0..1..4..5..6....1..0..1..0..1..0
..0..1..4..7..6..7....0..1..5..0..6..7....0..1..0..7..3..0....0..1..4..5..6..7
CROSSREFS
Column 6 of A198914.
Sequence in context: A070908 A198980 A198721 * A208300 A038778 A116107
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 31 2011
EXTENSIONS
Terms a(7) and beyond from Andrew Howroyd, Mar 12 2023
STATUS
approved