A244782 Number of length n 0..2 arrays with each partial sum starting from the beginning no more than one standard deviation from its mean.

1, 3, 7, 17, 41, 123, 345, 953, 2613, 7149, 19541, 53397, 145893, 437679, 1273955, 3675989, 10551223, 30194773, 86246645, 246068131, 701551365, 1999277391, 5695980955, 17087942865, 50401117439, 147878352761, 432425644451

Offset

1,2

Comments

Column 2 of A244788

Links

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

Example

Some solutions for n=10
..1....1....1....1....1....1....1....1....1....1....1....1....1....1....1....1
..1....1....2....1....0....1....1....0....2....0....1....1....2....2....2....0
..2....1....0....1....2....0....0....2....0....2....0....0....1....1....0....2
..1....0....0....0....2....2....2....0....0....2....1....2....1....1....1....2
..1....2....1....1....0....1....2....1....1....0....1....1....0....0....0....1
..1....1....0....1....0....2....0....0....2....0....1....0....2....2....1....2
..2....2....2....0....2....1....0....1....0....2....1....0....0....2....2....0
..1....1....0....2....0....1....0....1....1....0....1....2....1....1....0....1
..1....2....2....2....0....2....2....2....2....0....2....0....0....1....0....1
..1....0....1....1....2....1....2....2....0....1....0....2....2....0....2....2

Crossrefs

Sequence in context: A131721 A259855 A058351 * A175094 A086395 A020730

Adjacent sequences: A244779 A244780 A244781 * A244783 A244784 A244785

Keyword

nonn

Author

R. H. Hardin, Jul 06 2014

Status

approved