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A164430
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Number of binary strings of length n with no substrings equal to 0000 0011 or 1100
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1
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13, 21, 36, 62, 105, 178, 303, 516, 878, 1494, 2543, 4329, 7369, 12544, 21354, 36352, 61884, 105349, 179343, 305309, 519751, 884813, 1506288, 2564276, 4365376, 7431537, 12651316, 21537377, 36664853, 62417606, 106258647, 180892877
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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4,1
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LINKS
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FORMULA
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G.f. -x^4*(-13-8*x-2*x^2+8*x^3+14*x^4+12*x^5+8*x^6)/(1-x-x^2-x^3+x^5+x^6+x^7). - R. J. Mathar, Jan 19 2011
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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