A132739 - OEIS

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A132739

Largest divisor of n not divisible by 5.

1, 2, 3, 4, 1, 6, 7, 8, 9, 2, 11, 12, 13, 14, 3, 16, 17, 18, 19, 4, 21, 22, 23, 24, 1, 26, 27, 28, 29, 6, 31, 32, 33, 34, 7, 36, 37, 38, 39, 8, 41, 42, 43, 44, 9, 46, 47, 48, 49, 2, 51, 52, 53, 54, 11, 56, 57, 58, 59, 12, 61, 62, 63, 64, 13, 66, 67, 68, 69, 14, 71, 72, 73, 74, 3, 76, 77 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`A000265(a(n)) = a(A000265(n)) = A132740(n).`
	LINKS	`Reinhard Zumkeller, Table of n, a(n) for n = 1..10000`
	MATHEMATICA	`f[n_]:=Denominator[5^n/n]; Array[f, 100] (From Vladimir Joseph Stephan Orlovsky, Feb 16 2011)`
	PROG	`(Haskell)` `a132739 n \| r > 0 = n` `\| otherwise = a132739 n' where (n', r) = divMod n 5` `-- Reinhard Zumkeller, Apr 08 2011`
	CROSSREFS	`Sequence in context: A076388 A109680 A072438 * A060791 A116912 A030104` `Adjacent sequences: A132736 A132737 A132738 * A132740 A132741 A132742`
	KEYWORD	`nonn,mult`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 27 2007`

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Last modified February 16 16:34 EST 2012. Contains 205938 sequences.