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A262918 Number of (4+1)X(n+1) 0..1 arrays with each row divisible by 3 and each column divisible by 7, read as a binary number with top and left being the most significant bits. 1
5, 9, 53, 137, 853, 2953, 17333, 71721, 394325, 1791209, 9435253, 44924617, 230950613, 1126125513, 5713545653, 28200027881, 142082597845, 705663892009, 3542422689653, 17650591452297, 88436516562773, 441384307595273 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A262917.

LINKS

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

FORMULA

Empirical: a(n) = 7*a(n-1) +11*a(n-2) -147*a(n-3) +99*a(n-4) +777*a(n-5) -1019*a(n-6) -637*a(n-7) +910*a(n-8)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Cf. A262917.

Sequence in context: A000324 A123817 A124421 * A283918 A284382 A143554

Adjacent sequences:  A262915 A262916 A262917 * A262919 A262920 A262921

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 04 2015

STATUS

approved

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Last modified February 20 10:56 EST 2018. Contains 299385 sequences. (Running on oeis4.)