id:A064041 - OEIS Search Results

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Number of divisors of A064040(n).

+0
2

4, 4, 6, 4, 4, 6, 6, 4, 4, 8, 4, 6, 8, 4, 4, 4, 9, 4, 4, 8, 8, 6, 6, 4, 10, 6, 4, 6, 8, 4, 8, 4, 4, 12, 4, 6, 4, 8, 6, 4, 8, 12, 4, 6, 6, 4, 8, 10, 4, 12, 4, 4, 4, 8, 12, 4, 6, 4, 4, 4, 12, 6, 6, 9, 8, 8, 8, 4, 12, 8, 4, 10, 8, 4, 6, 6, 4, 4, 16, 4, 4, 6, 12, 4, 8, 12, 4, 4, 8, 8, 8, 12, 4, 4, 4, 15, 4 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Harry J. Smith, Table of n, a(n) for n=1,...,1000`
	EXAMPLE	`a(17) = 9 since 36 is the 17th number with prime number of prime divisors and 36 is divisible by 9 numbers.`
	PROGRAM	`(PARI) { n=0; for (m=1, 10^9, if (isprime(omega(m)), write("b064041.txt", n++, " ", numdiv(m)); if (n==1000, break)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Sep 06 2009]`
	CROSSREFS	`Cf. A064040.` `Sequence in context: A155976 A021228 A059656 this_sequence A077553 A010659 A131089` `Adjacent sequences: A064038 A064039 A064040 this_sequence A064042 A064043 A064044`
	KEYWORD	`nonn`
	AUTHOR	`Lior Manor (lior.manor(AT)gmail.com) Aug 23 2001`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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