id:A088821 - OEIS Search Results

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a(n) = sum of smallest prime factors of numbers from 1 to n.

+0
6

0, 2, 5, 7, 12, 14, 21, 23, 26, 28, 39, 41, 54, 56, 59, 61, 78, 80, 99, 101, 104, 106, 129, 131, 136, 138, 141, 143, 172, 174, 205, 207, 210, 212, 217, 219, 256, 258, 261, 263, 304, 306, 349, 351, 354, 356, 403, 405, 412, 414, 417, 419, 472, 474, 479, 481, 484 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A020639, A088822-A088825.` `Sequence in context: A007445 A159699 A063217 this_sequence A057897 A022758 A129232` `Adjacent sequences: A088818 A088819 A088820 this_sequence A088822 A088823 A088824`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Oct 22 2003`

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Last modified November 23 10:40 EST 2009. Contains 167421 sequences.

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