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Search: id:A004764
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| A004764 |
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Numbers n such that binary expansion does not begin 110. |
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+0
1
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| 0, 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86
(list; graph; listen)
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OFFSET
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1,3
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MATHEMATICA
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Flatten[Insert[Select[Range[120], If[Length[IntegerDigits[ #, 2]] >= 3, Not[IntegerDigits[ #, 2][[1]] == 1 && IntegerDigits[ #, 2][[2]] == 1 && IntegerDigits[ #, 2][[3]] == 0 ]] &], {0, 1, 2, 3}, 1]] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Apr 15 2006
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CROSSREFS
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Sequence in context: A129511 A055019 A014122 this_sequence A128649 A032894 A032853
Adjacent sequences: A004761 A004762 A004763 this_sequence A004765 A004766 A004767
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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