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A153034 Numbers with adjacent 0's and no adjacent 1's in binary expansion. 0
4, 8, 9, 16, 17, 18, 20, 32, 33, 34, 36, 37, 40, 41, 64, 65, 66, 68, 69, 72, 73, 74, 80, 81, 82, 84, 128, 129, 130, 132, 133, 136, 137, 138, 144, 145, 146, 148, 149, 160, 161, 162, 164, 165, 168, 169, 256, 257, 258, 260, 261, 264, 265, 266, 272, 273, 274, 276, 277 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..59.

EXAMPLE

a(1) = 4 because bin(4) = 100.

MATHEMATICA

fQ[n_] := Block[{st = Union@Split@IntegerDigits[n, 2]}, MemberQ[st, {0, __}] && !MemberQ[st, {1, __}]]; Select[Range@ 288, fQ@# &] (* Robert G. Wilson v, Dec 21 2008 *)

CROSSREFS

Cf. A153033, A000975. - Robert G. Wilson v, Dec 21 2008

Sequence in context: A072103 A004756 A237882 * A106840 A242663 A160053

Adjacent sequences:  A153031 A153032 A153033 * A153035 A153036 A153037

KEYWORD

base,easy,nonn

AUTHOR

Gil Broussard, Dec 17 2008

EXTENSIONS

Extended by Robert G. Wilson v, Dec 21 2008

STATUS

approved

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Last modified November 19 06:03 EST 2019. Contains 329310 sequences. (Running on oeis4.)