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A232312 Number of (n+1)X(4+1) 0..1 arrays with every element equal to some horizontal or antidiagonal neighbor, with top left element zero 1
52, 853, 14042, 231454, 3815483, 62897985, 1036869496, 17092731689, 281772661177, 4645005493684, 76572638191385, 1262295368124753, 20808863766803180, 343032876614802177, 5654876487122281889 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A232316

LINKS

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

FORMULA

Empirical: a(n) = 19*a(n-1) -44*a(n-2) +43*a(n-3) -19*a(n-4) +4*a(n-5) -2*a(n-6) for n>7

EXAMPLE

Some.solutions.for.n=3

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

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

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

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

CROSSREFS

Sequence in context: A160344 A163691 A007247 * A278001 A083936 A273655

Adjacent sequences:  A232309 A232310 A232311 * A232313 A232314 A232315

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 22 2013

STATUS

approved

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Last modified September 28 10:48 EDT 2021. Contains 347714 sequences. (Running on oeis4.)