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A198623 Number of nX4 0..5 arrays with values 0..5 introduced in row major order and each element equal to at least one horizontal or vertical neighbor 1
2, 76, 3904, 342414, 38208073, 5040999127, 713917706692, 104761044616109, 15592916566103795, 2336049130708319067, 350907921051582692624, 52773848213221906515449, 7940710788554386562472855 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A198627

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..52

EXAMPLE

Some solutions for n=5

..0..0..0..1....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..1

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

..0..0..3..4....0..0..2..1....0..0..2..3....0..0..2..0....0..0..1..1

..0..3..3..4....2..2..2..1....0..4..2..3....2..2..2..1....0..0..2..2

..1..1..1..1....3..3..3..3....4..4..2..3....0..0..2..1....3..3..2..2

CROSSREFS

Sequence in context: A276203 A324216 A198704 * A198651 A198658 A277298

Adjacent sequences: A198620 A198621 A198622 * A198624 A198625 A198626

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 27 2011

STATUS

approved

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Last modified December 3 20:26 EST 2022. Contains 358543 sequences. (Running on oeis4.)