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A262474 Number of (4+1)X(n+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
7, 17, 115, 457, 3055, 16081, 107731, 655001, 4427407, 28848817, 196901395, 1326556777, 9126593455, 62528586641, 432702173011, 2991144099001, 20781922758607, 144379920476017, 1005798678435475, 7008103279484297 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A262472.

LINKS

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

FORMULA

Empirical: a(n) = 7*a(n-1) +75*a(n-2) -525*a(n-3) -2034*a(n-4) +14238*a(n-5) +25010*a(n-6) -175070*a(n-7) -141969*a(n-8) +993783*a(n-9) +333315*a(n-10) -2333205*a(n-11) -214396*a(n-12) +1500772*a(n-13)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Cf. A262472.

Sequence in context: A068172 A067185 A205989 * A284416 A063384 A165246

Adjacent sequences:  A262471 A262472 A262473 * A262475 A262476 A262477

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 23 2015

STATUS

approved

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Last modified July 11 17:24 EDT 2020. Contains 335626 sequences. (Running on oeis4.)