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A282858 Number of nX4 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors. 1
13, 89, 583, 4163, 28537, 197892, 1369929, 9480913, 65635874, 454328733, 3144977815, 21770168425, 150697387128, 1043158090187, 7220949660280, 49984870462950, 346005348887302, 2395118766058622, 16579494922049801 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A282862.

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +24*a(n-2) +86*a(n-3) +170*a(n-4) +283*a(n-5) +346*a(n-6) +277*a(n-7) +180*a(n-8) +108*a(n-9) -251*a(n-10) +433*a(n-11) -547*a(n-12) +330*a(n-13) -46*a(n-14) -68*a(n-15) +25*a(n-16) -14*a(n-17) +11*a(n-18) -3*a(n-19) -2*a(n-20) +a(n-21)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A282862.

Sequence in context: A132260 A181508 A082099 * A268746 A152867 A026912

Adjacent sequences:  A282855 A282856 A282857 * A282859 A282860 A282861

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 23 2017

STATUS

approved

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Last modified July 17 18:47 EDT 2019. Contains 325109 sequences. (Running on oeis4.)