A263114 Number of (n+2)X(2+2) 0..1 arrays with each row and column not divisible by 7, read as a binary number with top and left being the most significant bits.

690, 12295, 186793, 2451774, 32967539, 436704585, 5681806458, 74169569127, 966450565505, 12565068890934, 163422952675987, 2125079662900321, 27626397338646690, 359160833412536727, 4669231561448806233

Offset

1,1

Comments

Column 2 of A263117.

Links

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

Example

Some solutions for n=3
..0..0..0..1....1..0..1..1....0..0..1..1....0..0..0..1....1..0..0..0
..1..1..1..1....1..0..0..1....1..0..0..1....0..1..1..0....0..0..1..0
..1..0..1..0....0..1..0..1....1..1..1..1....1..0..1..1....0..0..0..1
..0..0..1..0....0..1..0..1....1..0..0..1....0..0..1..0....1..0..0..1
..1..1..1..1....1..0..1..0....1..0..0..0....1..0..1..0....0..1..0..0

Crossrefs

Cf. A263117.

Sequence in context: A204145 A284284 A115177 * A214335 A060054 A120082

Adjacent sequences: A263111 A263112 A263113 * A263115 A263116 A263117

Keyword

nonn

Author

R. H. Hardin, Oct 09 2015

Status

approved