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A007845
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Least positive integer k for which 5^n divides k!.
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5
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1, 5, 10, 15, 20, 25, 25, 30, 35, 40, 45, 50, 50, 55, 60, 65, 70, 75, 75, 80, 85, 90, 95, 100, 100, 105, 110, 115, 120, 125, 125, 125, 130, 135, 140, 145, 150, 150, 155, 160, 165, 170, 175, 175, 180, 185, 190, 195, 200, 200, 205, 210, 215, 220, 225, 225, 230, 235, 240, 245
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Also the smallest factorial having n trailing zeros
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REFERENCES
| H. Ibstedt, Smarandache Primitive Numbers, Smarandache Notions Journal, Vol. 8, No. 1-2-3, 1997, 216-229.
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LINKS
| T. D. Noe, Table of n, a(n) for n=0..1000
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CROSSREFS
| Cf. A007843, A007844.
Sequence in context: A115772 A178891 A044890 * A076311 A063284 A092454
Adjacent sequences: A007842 A007843 A007844 * A007846 A007847 A007848
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KEYWORD
| nonn
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AUTHOR
| Bruce Dearden and Jerry Metzger (metzger(AT)rs1.cc.und.nodak.edu)
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EXTENSIONS
| Comment added by Jud McCranie (JudMcCranie(AT)ugaalum.uga.edu), Oct 05 2010
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