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A262467 Number of (n+1)X(3+1) 0..1 arrays with each row divisible by 3 and each column divisible by 5, read as a binary number with top and left being the most significant bits. 1
1, 6, 36, 115, 469, 2622, 15732, 85723, 494605, 2942190, 17653140, 105022051, 628157125, 3765830046, 22594980276, 135471987115, 812624087485, 4875367337166, 29252204022996, 175502212001971, 1052990612251381 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A262472.

LINKS

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

FORMULA

Empirical: a(n) = 11*a(n-1) -49*a(n-2) +179*a(n-3) -382*a(n-4) -478*a(n-5) +4682*a(n-6) -20542*a(n-7) +61367*a(n-8) -104077*a(n-9) +152183*a(n-10) -136453*a(n-11) -60984*a(n-12) +104544*a(n-13) -156816*a(n-14) +156816*a(n-15)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Cf. A262472.

Sequence in context: A207427 A207712 A207718 * A225262 A253652 A083374

Adjacent sequences:  A262464 A262465 A262466 * A262468 A262469 A262470

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 23 2015

STATUS

approved

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Last modified September 15 04:07 EDT 2019. Contains 327062 sequences. (Running on oeis4.)