A222152 Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..7 array extended with zeros and convolved with 1,-2,1.

2, 4, 8, 15, 27, 47, 80, 134, 222, 365, 597, 973, 1582, 2568, 4163, 6744, 10921, 17681, 28621, 46325, 74974, 121333, 196348, 317730, 514136, 831934, 1346149, 2178174, 3524427, 5702718, 9227274, 14930134, 24157566, 39087878, 63245647, 102333759

Offset

1,1

Comments

Column 7 of A222153.

Links

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

Example

Some solutions for n=7, one extended zero followed by filtered positions:
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..0....1....1....0....1....0....0....1....0....1....0....1....0....1....0....0
..1....0....0....1....0....0....0....0....1....0....0....0....0....0....0....0
..0....0....1....0....0....0....0....0....0....0....0....1....0....1....1....0
..0....1....0....1....0....1....0....1....1....1....0....0....1....0....0....1
..0....0....1....0....0....0....1....0....0....0....0....0....0....0....0....0
..1....1....0....0....1....0....0....0....1....0....0....0....0....0....0....1
..0....0....1....0....0....1....1....0....0....1....1....0....0....0....0....0
..0....0....0....1....1....0....0....1....0....0....0....0....0....1....1....0
..0....0....0....0....0....1....1....0....0....1....1....1....1....0....0....1

Crossrefs

Sequence in context: A222042 A222150 A222151 * A000126 A344611 A182716

Adjacent sequences: A222149 A222150 A222151 * A222153 A222154 A222155

Keyword

nonn

Author

R. H. Hardin, Feb 09 2013

Status

approved