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A068567 Numbers such that lpf(n)<n/lpf(n) and lpf(n/lpf(n))<lpf(n), where lpf(n) is the largest prime factor of n, A006530. 0
12, 24, 30, 40, 45, 48, 56, 60, 63, 70, 80, 84, 90, 96, 105, 112, 120, 126, 132, 135, 140, 154, 160, 165, 168, 175, 176, 180, 182, 189, 192, 195, 198, 208, 210, 220, 224, 231, 234, 240, 252, 260, 264, 270, 273, 275, 280, 286 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..48.

CROSSREFS

Cf. A063539.

Sequence in context: A098714 A108938 A085236 * A082801 A261435 A103590

Adjacent sequences:  A068564 A068565 A068566 * A068568 A068569 A068570

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Mar 25 2002

STATUS

approved

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Last modified December 5 09:15 EST 2016. Contains 278762 sequences.