id:A065746 - OEIS Search Results

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Number of divisors of squares of all true powers of primes: A000005[A025475(n)^2].

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5, 7, 5, 9, 5, 7, 11, 5, 13, 9, 5, 7, 15, 5, 11, 17, 5, 7, 5, 19, 5, 9, 13, 5, 5, 21, 7, 5, 5, 5, 23, 15, 7, 5, 9, 5, 11, 5, 5, 25, 5, 7, 5, 5, 5, 17, 7, 5, 5, 27, 5, 5, 5, 5, 5, 7, 5, 9, 13, 5, 29, 11, 5, 5, 5, 19, 5, 5, 7, 5, 5, 5, 9, 7, 5, 5, 5, 31, 5, 5, 5, 5, 5, 5, 7, 5, 5, 5, 5, 5, 21, 5, 33 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`tau[p^(2c)], where tau is the number of divisors, c>1 and p is prime.`
	EXAMPLE	`d[p^(2c)]=2c+1 is prime if c=(p-1)/2=1,2,3,5,6,8,... = A005097`
	CROSSREFS	`Cf. A000005, A025475, A065403-A065405, A005097.` `Sequence in context: A144567 A010718 A090987 this_sequence A065478 A109353 A121595` `Adjacent sequences: A065743 A065744 A065745 this_sequence A065747 A065748 A065749`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Nov 16 2001`

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

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