A212238 Number of 0..2 arrays of length 5+2*n with sum no more than 2*n in any length 2n subsequence (=50% duty cycle)

353, 4663, 51440, 514687, 4931630, 46305966, 429886243, 3962696059, 36354382954, 332393767866, 3031533285381, 27595759169532, 250826014161861, 2277103688384513, 20652344756363304, 187156724402029627

Offset

1,1

Comments

Row 6 of A212232

Links

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

Example

Some solutions for n=3
..1....2....0....0....1....1....1....2....1....2....0....2....1....2....1....1
..1....0....2....1....0....0....1....0....2....1....0....0....1....2....0....2
..0....0....0....0....2....1....1....0....0....1....1....1....1....1....2....1
..0....0....1....1....0....1....0....0....0....0....2....1....0....0....1....0
..1....0....0....1....2....1....2....1....0....2....0....0....0....0....0....1
..1....0....2....0....0....1....1....0....2....0....0....0....0....0....0....1
..0....0....0....0....0....0....0....2....0....0....0....1....2....0....0....1
..0....0....2....2....0....1....0....2....0....1....1....1....0....1....2....1
..1....0....0....0....0....1....1....1....1....2....0....0....1....2....1....0
..0....2....2....2....0....1....2....0....0....1....1....1....1....2....0....0
..1....2....0....2....0....0....0....1....1....0....1....2....1....0....2....0

Crossrefs

Sequence in context: A098678 A056216 A101219 * A134820 A262205 A126113

Adjacent sequences: A212235 A212236 A212237 * A212239 A212240 A212241

Keyword

nonn

Author

R. H. Hardin May 06 2012

Status

approved