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A061427
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Geometric mean of the digits = 3. In other words the product of the digits is = 3^k where k is the number of digits.
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3
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3, 19, 33, 91, 139, 193, 319, 333, 391, 913, 931, 1199, 1339, 1393, 1919, 1933, 1991, 3139, 3193, 3319, 3333, 3391, 3913, 3931, 9119, 9133, 9191, 9313, 9331, 9911, 11399, 11939, 11993, 13199, 13339, 13393, 13919, 13933, 13991, 19139, 19193
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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EXAMPLE
| 319 is a term as the geometric mean of digits is (3*1*9) = 27 = 3^3.
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MATHEMATICA
| Select[Range[20000], GeometricMean[IntegerDigits[#]]==3&] (* From Harvey P. Dale, Dec 11 2011 *)
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CROSSREFS
| Cf. A061426-A061430.
Sequence in context: A162307 A128069 A056246 * A069516 A098856 A178201
Adjacent sequences: A061424 A061425 A061426 * A061428 A061429 A061430
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KEYWORD
| nonn,base,easy
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 03 2001
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EXTENSIONS
| More terms from Larry Reeves (larryr(AT)acm.org), May 16 2001
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