A202570 Number of (n+3)X7 binary arrays with no more than two of any consecutive four bits set in any row or column

3525903, 116710359, 3960376543, 133595643125, 4416423552899, 146521400746907, 4884856784343255, 162753806260330153, 5417559503164734667, 180285965744987292345, 6002130815063113162999, 199829570019880146647609

Offset

1,1

Comments

Column 4 of A202574

Links

R. H. Hardin, Table of n, a(n) for n = 1..50

Example

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

Crossrefs

Sequence in context: A209785 A244620 A347054 * A348809 A209857 A107349

Adjacent sequences: A202567 A202568 A202569 * A202571 A202572 A202573

Keyword

nonn

Author

R. H. Hardin Dec 21 2011

Status

approved