A212228 Number of 0..2 arrays of length n+7 with sum no more than 8 in any length 8 subsequence (=50% duty cycle)

3834, 10002, 26637, 71427, 191853, 514687, 1376128, 3659968, 9662878, 25562476, 67800449, 180120882, 478897973, 1273545563, 3386125989, 8999257525, 23906208533, 63493578634, 168644397152, 447996097328, 1190222549456

Offset

1,1

Comments

Column 4 of A212232

Links

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

Example

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

Crossrefs

Sequence in context: A259522 A209894 A255621 * A231416 A151564 A179747

Adjacent sequences: A212225 A212226 A212227 * A212229 A212230 A212231

Keyword

nonn

Author

R. H. Hardin May 06 2012

Status

approved