A221998 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 1,4,6,4,1

2, 3, 4, 7, 11, 16, 27, 43, 65, 108, 172, 271, 440, 699, 1114, 1791, 2848, 4557, 7303, 11636, 18632, 29809, 47581, 76146, 121741, 194530, 311153, 497374, 795078, 1271430, 2032388, 3249349, 5195392, 8305453, 13278861, 21230240, 33940767

Offset

1,1

Comments

Column 7 of A221999

Links

R. H. Hardin, Table of n, a(n) for n = 1..169

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....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..0....1....0....0....1....0....0....0....0....0....0....0....0....0....1....0
..0....0....1....0....0....1....0....0....0....0....1....1....0....0....0....0
..0....0....0....0....0....0....1....0....1....0....0....0....0....0....0....0
..1....0....0....0....1....1....0....0....0....0....0....1....0....1....0....1
..0....0....0....0....0....0....1....1....0....0....0....0....0....0....0....0
..0....0....0....0....0....0....0....0....0....0....1....1....1....1....0....0
..0....1....0....0....1....1....0....1....0....1....0....0....0....0....0....1
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0

Crossrefs

Sequence in context: A337495 A222023 A221997 * A165407 A039897 A297789

Adjacent sequences: A221995 A221996 A221997 * A221999 A222000 A222001

Keyword

nonn

Author

R. H. Hardin Feb 03 2013

Status

approved