A024708 - OEIS

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A024708

Number of distinct prime divisors of n-th term of A024702.

0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 4, 3, 3, 2, 4, 2, 2, 3, 2, 3, 3, 3, 3, 3, 3, 2, 3, 2, 2, 3, 2, 3, 4, 3, 2, 3, 4, 3, 3, 2, 3, 4, 4, 3, 3, 2, 3, 3, 4, 2, 4, 2, 2, 4, 4, 3, 2, 3, 3, 2, 3, 3, 4, 3, 3, 4, 2, 3, 3, 3, 4, 4, 3, 4, 4, 4, 3, 4, 3, 4, 4, 3, 3, 3, 3, 2, 4, 3, 5, 3, 3, 3, 3 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`3,5`
	LINKS	`Charles R Greathouse IV, Table of n, a(n) for n = 3..10000`
	MATHEMATICA	`PrimeNu[(Prime[Range[3, 100]]^2 - 1) / 24] (* Vincenzo Librandi, Apr 27 2019 *)`
	PROG	`(PARI) a(n)=omega(prime(n)^2\24) \\ Charles R Greathouse IV, May 30 2013` `(Magma) [#PrimeDivisors(NthPrime(n)^2 div 24): n in [3..100]]; // Vincenzo Librandi, Apr 27 2019`
	CROSSREFS	`Sequence in context: A238277 A258757 A351399 * A096917 A336664 A335108` `Adjacent sequences: A024705 A024706 A024707 * A024709 A024710 A024711`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling`
	EXTENSIONS	`a(25) and other terms corrected by Charles R Greathouse IV, May 30 2013`
	STATUS	`approved`

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Last modified March 22 22:37 EDT 2023. Contains 361434 sequences. (Running on oeis4.)