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A232071 Number of (n+1)X(3+1) 0..1 arrays with every element equal to some horizontal, diagonal or antidiagonal neighbor, with top left element zero 1
46, 520, 6624, 82996, 1043172, 13105012, 164650280, 2068621706, 25989674166, 326528021922, 4102419848778, 51541819920986, 647559075731254, 8135777066019200, 102215953652767856, 1284216749830662044 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A232076

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 10*a(n-1) +33*a(n-2) +6*a(n-3) -176*a(n-4) -300*a(n-5) -15*a(n-6) -76*a(n-7) +79*a(n-8) +72*a(n-9) -16*a(n-10)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A160285 A111304 A055751 * A156892 A224258 A223914

Adjacent sequences:  A232068 A232069 A232070 * A232072 A232073 A232074

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2013

STATUS

approved

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Last modified August 4 19:03 EDT 2021. Contains 346455 sequences. (Running on oeis4.)