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A198657 Number of nX3 0..7 arrays with values 0..7 introduced in row major order and each element equal to at least one horizontal or vertical neighbor 1
1, 14, 185, 3904, 98467, 3053286, 109133049, 4460603630, 202661109307, 10057569576034, 533251017131222, 29684104738808241, 1708995821028336330, 100671800330158890680, 6020806089426293935506, 363687165160204642974491 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A198661

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..138

EXAMPLE

Some solutions with all values 0 to 7 for n=6

..0..0..1....0..1..1....0..1..1....0..1..2....0..0..1....0..1..1....0..1..1

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

..3..4..5....3..3..4....3..3..2....3..3..4....3..3..4....0..2..3....3..3..2

..3..4..5....5..3..4....4..5..6....5..5..4....5..5..4....4..5..5....4..4..5

..6..6..0....5..6..7....4..5..6....6..6..6....6..6..4....4..6..6....6..5..5

..7..7..0....6..6..7....4..7..7....7..7..6....7..7..7....7..7..6....6..7..7

CROSSREFS

Sequence in context: A198703 A198622 A198650 * A055759 A275084 A086946

Adjacent sequences:  A198654 A198655 A198656 * A198658 A198659 A198660

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 28 2011

STATUS

approved

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Last modified December 14 09:41 EST 2019. Contains 329979 sequences. (Running on oeis4.)