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A164427 Number of binary strings of length n with no substrings equal to 0000 0011 or 0110 1
13, 22, 37, 63, 105, 177, 297, 500, 839, 1411, 2370, 3984, 6693, 11249, 18901, 31764, 53374, 89694, 150720, 253277, 425607, 715204, 1201837, 2019598, 3393765, 5702960, 9583358, 16104079, 27061604, 45474878, 76416880, 128412479, 215786884 (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 (1,1,0,1,-1).

FORMULA

G.f. -x^4*(-13-9*x-2*x^2-4*x^3+8*x^4) / ( 1-x-x^2-x^4+x^5 ). - R. J. Mathar, Dec 01 2011

CROSSREFS

Sequence in context: A164425 A164501 A164495 * A164507 A164414 A164456

Adjacent sequences:  A164424 A164425 A164426 * A164428 A164429 A164430

KEYWORD

nonn

AUTHOR

R. H. Hardin Aug 14 2009

STATUS

approved

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Last modified September 22 09:19 EDT 2017. Contains 292336 sequences.