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A090334 Numbers with at least one divisor >1 that is a prefix of another divisor in binary representation. 3
4, 6, 8, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 39, 40, 42, 44, 45, 46, 48, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 66, 68, 70, 72, 74, 75, 76, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 92, 93, 94, 95, 96, 98, 99, 100, 102, 104, 105 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A090330(a(n))>0; complement of A090332; A090331(a(n))>1;

even numbers >2 belong to this sequence.

Divisors >1 of 51: {3,17,51}, in binary: {11, 10001, 110011}, as '11' is a prefix of '110011' 51 is a term.

LINKS

Table of n, a(n) for n=1..68.

CROSSREFS

Sequence in context: A228358 A134331 A276040 * A272601 A322368 A078941

Adjacent sequences:  A090331 A090332 A090333 * A090335 A090336 A090337

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Nov 26 2003

STATUS

approved

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Last modified April 18 10:35 EDT 2019. Contains 322209 sequences. (Running on oeis4.)