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A164476 Number of binary strings of length n with no substrings equal to 0001 0110 or 0111 1
13, 20, 30, 43, 61, 85, 117, 160, 217, 293, 394, 528, 706, 942, 1255, 1670, 2220, 2949, 3915, 5195, 6891, 9138, 12115, 16059, 21284, 28206, 37376, 49524, 65617, 86936, 115178, 152591, 202153, 267809, 354785, 470004, 622637, 824833, 1092686, 1447516 (list; graph; refs; listen; history; internal format)
OFFSET

4,1

LINKS

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

Index to sequences with linear recurrences with constant coefficients, signature (2,0,-1,-1,1).

FORMULA

G.f. -x^4*(13-6*x-10*x^2-4*x^3+8*x^4) / ( (x^3+x^2-1)*(x-1)^2 ). - R. J. Mathar, Jan 19 2011

CROSSREFS

Sequence in context: A164482 A058016 A096277 * A164466 A164475 A164483

Adjacent sequences:  A164473 A164474 A164475 * A164477 A164478 A164479

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Aug 14 2009

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Last modified February 17 16:49 EST 2012. Contains 206058 sequences.