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A069105
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1/n has period 3 in base 10.
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4
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27, 37, 54, 74, 108, 111, 135, 148, 185, 222, 270, 333, 370, 444, 540, 555, 666, 675, 740, 925, 999, 1080, 1110, 1332, 1350, 1480, 1665, 1850, 1998, 2220, 2664, 2700, 2775, 3330, 3375, 3700, 3996, 4440, 4625, 4995, 5400, 5550, 6660, 6750, 7400, 7992
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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FORMULA
| Numbers of the form a*b*c where a is in {27, 37, 111, 333, 999}, b is a power of 2 and c is a power of 5. - Henry Bottomley (se16(AT)btinternet.com), Apr 12 2002
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EXAMPLE
| 1/1332 = 0.000750750750...
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MATHEMATICA
| Select[ Range[7500], Length[ RealDigits[1/# ] [[1, 1]]] == 3 &]
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CROSSREFS
| Cf. A018766, A003592, A070021, A070022, A070023.
Sequence in context: A166649 A025145 A180961 * A159259 A097228 A039614
Adjacent sequences: A069102 A069103 A069104 * A069106 A069107 A069108
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KEYWORD
| base,easy,nonn
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AUTHOR
| Joshua Horowitz (mccartneyman(AT)yahoo.com), Apr 07 2002
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EXTENSIONS
| Extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Apr 07 2002
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