A213463 Number of 0..3 arrays of length n+13 with sum less than 21 in any length 14 subsequence (=less than 50% duty cycle)

121573668, 422335348, 1508740928, 5451265872, 19808276303, 72188618371, 263422708979, 961420842175, 3506529656386, 12771245213778, 46419273790680, 168267481707156, 607940940612132, 2187698564614622, 7835295875376792

Offset

1,1

Comments

Column 7 of A213464

Links

R. H. Hardin, Table of n, a(n) for n = 1..36

Example

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

Crossrefs

Sequence in context: A038131 A081734 A058362 * A175321 A215264 A307115

Adjacent sequences: A213460 A213461 A213462 * A213464 A213465 A213466

Keyword

nonn

Author

R. H. Hardin Jun 12 2012

Status

approved