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A262760 Number of (3+2)X(n+2) 0..1 arrays with each row divisible by 5 and each column divisible by 7, read as a binary number with top and left being the most significant bits. 1
5, 25, 49, 129, 709, 4953, 16705, 73345, 384485, 2252185, 9821425, 47556225, 241769125, 1278440025, 6106506625, 30240858625, 152043549125, 774590745625, 3814859880625, 19015880330625, 95252710613125, 479215784705625 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A262759.

LINKS

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

FORMULA

Empirical: a(n) = 5*a(n-1) +290*a(n-4) -1450*a(n-5) -19200*a(n-8) +96000*a(n-9) +370750*a(n-12) -1853750*a(n-13) -1409375*a(n-16) +7046875*a(n-17)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Cf. A262759.

Sequence in context: A147176 A298041 A074493 * A290700 A136914 A136913

Adjacent sequences:  A262757 A262758 A262759 * A262761 A262762 A262763

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 30 2015

STATUS

approved

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Last modified July 5 17:04 EDT 2020. Contains 335473 sequences. (Running on oeis4.)