id:A102845 - OEIS Search Results

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Number of prime factors of the sum of the first n odd primes.

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1, 3, 2, 2, 2, 4, 3, 3, 1, 2, 3, 3, 3, 2, 1, 3, 1, 2, 3, 3, 2, 4, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 4, 3, 3, 2, 4, 7, 2, 8, 3, 5, 2, 4, 4, 3, 2, 3, 4, 4, 2, 4, 1, 9, 1, 4, 3, 6, 2, 6, 1, 6, 2, 5, 1, 4, 2, 5, 3, 3, 1, 4, 3, 5, 1, 6, 2, 3, 2, 4, 3, 4, 3, 2, 2, 5, 2, 7, 2, 4, 2, 8, 3, 4, 1, 2, 4, 4, 2, 5, 4, 2, 4, 2, 2 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`a(2)=3 because 3+5=8=222;` `a(3)=2 because 3+5+7=15=3*5.`
	PROGRAM	`(PARI) for(n=1, 105, print1(bigomega(sum(k=1, n, prime(k+1))), ", ")) (Shepherd)`
	CROSSREFS	`Sequence in context: A104890 A064123 A024703 this_sequence A064126 A130845 A134653` `Adjacent sequences: A102842 A102843 A102844 this_sequence A102846 A102847 A102848`
	KEYWORD	`easy,nonn`
	AUTHOR	`Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Feb 28 2005`
	EXTENSIONS	`More terms from Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 18 2005`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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