A244787 Number of length n 0..7 arrays with each partial sum starting from the beginning no more than one standard deviation from its mean.

4, 26, 166, 1116, 7730, 54842, 396488, 2909656, 21610932, 162100016, 1225834896, 8922787256, 67040518864, 509020798128, 3892934735724, 29936839485280, 223995395536680, 1713567578188868, 13203130087417636, 102232099278447604

Offset

1,1

Comments

Column 7 of A244788

Links

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

Example

Some solutions for n=10
..4....4....4....4....4....4....4....4....4....4....4....4....4....4....4....4
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..4....4....4....4....4....4....4....4....4....4....4....4....4....4....4....4
..2....2....2....2....2....2....2....2....2....2....2....2....2....2....2....2
..7....7....7....7....3....4....7....7....6....4....7....5....6....3....6....6
..4....0....3....7....7....4....3....7....3....6....4....2....3....5....3....1
..7....7....1....5....1....6....2....6....7....6....0....4....0....5....3....5
..5....1....7....4....6....6....1....0....0....6....4....6....7....4....2....4
..4....6....4....2....7....0....7....7....7....0....3....3....4....5....7....2
..2....6....3....2....5....1....1....0....6....6....3....5....2....2....6....0

Crossrefs

Sequence in context: A124544 A145840 A302335 * A220305 A210911 A278416

Adjacent sequences: A244784 A244785 A244786 * A244788 A244789 A244790

Keyword

nonn

Author

R. H. Hardin, Jul 06 2014

Status

approved