id:A045985 - OEIS Search Results

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a(n) = least k such that sum of first k primes is n times a prime.

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1, 3, 10, 5, 3, 123, 8, 15, 20, 147, 8, 97, 92, 5, 414, 27, 120, 739, 144, 9, 86, 69, 858, 99, 62, 61, 26, 33, 7, 57, 456, 11, 76, 13, 180, 207, 58, 23, 166, 17, 38, 339, 10, 693, 242, 23, 1162, 169, 440, 9, 374, 117, 682, 187, 1284, 683, 70, 281, 48 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1000`
	EXAMPLE	`For example a(3)=10 because the partial sum of first 10 primes is 3*43=129`
	CROSSREFS	`Sequence in context: A003620 A111229 A100984 this_sequence A035411 A033478 A111127` `Adjacent sequences: A045982 A045983 A045984 this_sequence A045986 A045987 A045988`
	KEYWORD	`nice,nonn`
	AUTHOR	`Felice Russo (felice.russo(AT)katamail.com)`
	EXTENSIONS	`More terms from David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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