id:A102862 - OEIS Search Results

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Numbers of prime factors of the sum of the first n primes.

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1, 1, 2, 1, 3, 1, 2, 2, 4, 2, 6, 1, 3, 1, 4, 2, 5, 2, 4, 3, 4, 2, 3, 3, 4, 4, 5, 2, 5, 4, 5, 2, 4, 2, 3, 2, 5, 2, 3, 5, 3, 3, 3, 2, 4, 2, 3, 2, 5, 3, 4, 6, 4, 2, 2, 3, 4, 2, 2, 1, 3, 3, 3, 1, 2, 2, 3, 3, 3, 3, 5, 2, 3, 4, 2, 3, 4, 3, 6, 4, 3, 2, 6, 4, 5, 3, 5, 4, 4, 3, 5, 2, 2, 2, 6, 1, 4, 3, 5, 1, 5, 1, 7, 2, 5 (list; graph; listen)

	OFFSET	`1,3`
	EXAMPLE	`a(3)=2 because 2+3+5=10=25;` `a(5)=3 because 2+3+5+7+11=28=22*7.`
	PROGRAM	`(PARI) for(n=1, 105, print1(bigomega(sum(k=1, n, prime(k))), ", ")) (Shepherd)`
	CROSSREFS	`Sequence in context: A035197 A091948 A161901 this_sequence A029331 A037269 A124579` `Adjacent sequences: A102859 A102860 A102861 this_sequence A102863 A102864 A102865`
	KEYWORD	`nonn`
	AUTHOR	`Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Mar 01 2005`
	EXTENSIONS	`More terms from Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 17 2005`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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