A244826 Number of length n 0..2 arrays with each partial sum starting from the beginning no more than two standard deviations from its mean

3, 9, 25, 75, 219, 657, 1947, 5737, 16835, 50505, 150269, 445611, 1318207, 3954621, 11801871, 35144759, 104488339, 310274387, 930823161, 2782086765, 8302860633, 24751434187, 73723434683, 221170304049, 661776939649, 1978053826173

Offset

1,1

Comments

Column 2 of A244832

Links

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

Example

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

Crossrefs

Sequence in context: A101499 A004665 A196431 * A183111 A132835 A191354

Adjacent sequences: A244823 A244824 A244825 * A244827 A244828 A244829

Keyword

nonn

Author

R. H. Hardin, Jul 06 2014

Status

approved