A262852 Number of (3+2)X(n+2) 0..1 arrays with each row divisible by 7 and column not divisible by 7, read as a binary number with top and left being the most significant bits.

27, 132, 1336, 37635, 771084, 17912392, 481968171, 12572589132, 333224229896, 8994193541379, 241857613967412, 6515666351143848, 175918432063803627, 4747650731553770292, 128153708240382030872, 3460143599773663664643

Offset

1,1

Comments

Row 3 of A262849.

Links

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

Example

Some solutions for n=4
..1..1..1..1..1..1....1..1..0..0..0..1....0..0..0..1..1..1....0..1..0..1..0..1
..0..0..0..1..1..1....0..0..1..1..1..0....1..1..0..0..0..1....1..1..1..0..0..0
..0..0..0..1..1..1....0..0..0..0..0..0....1..1..0..0..0..1....1..0..1..0..1..0
..0..1..1..1..0..0....1..0..1..0..1..0....1..0..0..0..1..1....0..0..0..0..0..0
..0..0..0..1..1..1....0..0..0..0..0..0....1..1..1..0..0..0....1..1..1..1..1..1

Crossrefs

Cf. A262849.

Sequence in context: A124955 A126414 A183427 * A066414 A344315 A042422

Adjacent sequences: A262849 A262850 A262851 * A262853 A262854 A262855

Keyword

nonn

Author

R. H. Hardin, Oct 03 2015

Status

approved