id:A090259 - OEIS Search Results

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Least even a(n) not representable as a sum of two of the first n primes. From Goldbach conjecture.

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6, 8, 12, 16, 20, 28, 32, 40, 44, 44, 56, 64, 76, 76, 92, 92, 92, 110, 116, 116, 136, 136, 148, 164, 174, 182, 188, 188, 220, 224, 232, 242, 242, 256, 260, 272, 272, 292, 292, 292, 332, 350, 350, 368, 368, 368, 400, 400, 412, 412, 436, 442, 442, 476, 476, 476 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n)<=2p(n)+2, where p(n) is the n-th prime.`
	EXAMPLE	`a(5)=20 since {2,3,5,7,11} can't represent 20 as a sum of two primes`
	CROSSREFS	`Cf. A002372.` `Sequence in context: A059611 A115166 A050992 this_sequence A089241 A027691 A146529` `Adjacent sequences: A090256 A090257 A090258 this_sequence A090260 A090261 A090262`
	KEYWORD	`nonn`
	AUTHOR	`Ed T. Prothro (prothro(AT)compuserve.com), Jan 24 2004`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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