A212228 - OEIS

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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

(list; graph; refs; listen; history; text; internal format)

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