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A145645 Numbers n such that (binary weight of n)/(length of binary representation of n) equals 1/3. 0
4, 33, 34, 36, 40, 48, 259, 261, 262, 265, 266, 268, 273, 274, 276, 280, 289, 290, 292, 296, 304, 321, 322, 324, 328, 336, 352, 385, 386, 388, 392, 400, 416, 448 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Generalization: numbers such that A000120(n)/A070939(n)=c. For c = 1 we have A000225, for c = 1/2 we have A031443. We may take c=p/q, 1 <= p < q. All sequences of this type show the same kind of "flocking" behavior.

LINKS

Table of n, a(n) for n=1..34.

CROSSREFS

Cf. A000120, A070939, A000523, A000225, A031443.

Sequence in context: A027639 A117620 A059904 * A042831 A092207 A133630

Adjacent sequences:  A145642 A145643 A145644 * A145646 A145647 A145648

KEYWORD

base,easy,nonn

AUTHOR

Ctibor O. Zizka, Oct 15 2008

STATUS

approved

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Last modified October 23 07:20 EDT 2018. Contains 316520 sequences. (Running on oeis4.)