A262913 Number of (n+1)X(4+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, 11, 33, 137, 1411, 7417, 51769, 529931, 4701201, 44632313, 454922851, 4573641865, 46374477961, 476430252011, 4902011719233, 50649718388009, 526357874613571, 5483464232074777, 57393678601087705, 603752064813378251

Offset

1,2

Comments

Column 4 of A262917.

Links

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

Example

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

Crossrefs

Cf. A262917.

Sequence in context: A206527 A297478 A213973 * A179204 A372069 A328606

Adjacent sequences: A262910 A262911 A262912 * A262914 A262915 A262916

Keyword

nonn

Author

R. H. Hardin, Oct 04 2015

Status

approved