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A164405 Number of binary strings of length n with no substrings equal to 0010 or 1100 1
14, 24, 41, 70, 120, 207, 358, 620, 1074, 1860, 3220, 5573, 9644, 16688, 28877, 49970, 86472, 149640, 258954, 448124, 775485, 1341986, 2322320, 4018795, 6954558, 12034920, 20826530, 36040488, 62368376, 107929017, 186772104, 323210752 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

LINKS

R. H. Hardin, Table of n, a(n) for n=4..500

Index entries for linear recurrences with constant coefficients, signature (2,0,-1,0,0,1).

FORMULA

G.f. -x^4*(14-4*x-7*x^2+2*x^3+4*x^4+8*x^5) / ( -1+2*x-x^3+x^6 ). - R. J. Mathar, Nov 30 2011

CROSSREFS

Sequence in context: A164396 A164404 A164400 * A164395 A164394 A211323

Adjacent sequences:  A164402 A164403 A164404 * A164406 A164407 A164408

KEYWORD

nonn

AUTHOR

R. H. Hardin Aug 14 2009

STATUS

approved

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Last modified August 17 23:58 EDT 2017. Contains 290682 sequences.