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A164470 Number of binary strings of length n with no substrings equal to 0001 0101 or 0111 1
13, 20, 32, 48, 69, 102, 148, 208, 297, 424, 592, 832, 1177, 1642, 2292, 3224, 4501, 6268, 8784, 12272, 17085, 23886, 33380, 46496, 64913, 90704, 126432, 176384, 246385, 343634, 479268, 669224, 933725, 1302244, 1817792, 2536752, 3538293 (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,-1,2,-3,0,1).

FORMULA

G.f. -x^4*(13-6*x+5*x^2-22*x^3+4*x^4+8*x^5) / ( (x^4+2*x^3-1)*(x-1)^2 ). - R. J. Mathar, Jan 19 2011

CROSSREFS

Sequence in context: A164474 A164478 A164463 * A164469 A164462 A132946

Adjacent sequences:  A164467 A164468 A164469 * A164471 A164472 A164473

KEYWORD

nonn

AUTHOR

R. H. Hardin Aug 14 2009

STATUS

approved

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Last modified July 26 02:10 EDT 2021. Contains 346294 sequences. (Running on oeis4.)