A202572 Number of (n+3)X9 binary arrays with no more than two of any consecutive four bits set in any row or column

213463753, 18492393187, 1650251537699, 146521400746907, 12758620895555309, 1113579994706467210, 97657176595311660327

Offset

1,1

Comments

Column 6 of A202574

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for n=2
..1..0..0..0..0..0..1..0..1....0..1..0..1..0..0..0..1..0
..1..0..0..0..0..0..0..1..0....0..1..1..0..0..1..1..0..0
..0..1..1..0..0..1..1..0..0....1..0..1..0..1..0..0..0..1
..0..1..1..0..0..1..0..0..0....1..0..0..0..0..0..1..0..0
..1..0..0..1..1..0..0..0..0....0..1..0..1..0..0..0..1..0

Crossrefs

Sequence in context: A037253 A359129 A064588 * A198169 A358343 A017288

Adjacent sequences: A202569 A202570 A202571 * A202573 A202574 A202575

Keyword

nonn

Author

R. H. Hardin Dec 21 2011

Status

approved