A212467 Number of 0..3 arrays of length n+7 with sum no more than 12 in any length 8 subsequence (=50% duty cycle)

36814, 126606, 445780, 1581686, 5622580, 19960518, 70600212, 248263590, 865983608, 3027296124, 10612842491, 37272366925, 131018316920, 460663150544, 1619367566685, 5689883208343, 19982014129382, 70158722229804

Offset

1,1

Comments

Column 4 of A212471

Links

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

Example

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

Crossrefs

Sequence in context: A203939 A061739 A232135 * A187032 A251386 A175748

Adjacent sequences: A212464 A212465 A212466 * A212468 A212469 A212470

Keyword

nonn

Author

R. H. Hardin May 17 2012

Status

approved