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

Author

R. H. Hardin, Oct 04 2015

Keywords

• nonn

Comments

Column 4 of A262917.

Examples

			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
		

Links

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

Crossrefs

Cf. A262917.