id:A133412 - OEIS Search Results

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Sum of primes between n-th and (n+1)-th semiprimes.

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5, 7, 0, 24, 0, 36, 0, 23, 0, 60, 0, 0, 37, 0, 84, 47, 0, 53, 0, 0, 120, 0, 67, 144, 0, 79, 83, 0, 0, 89, 0, 0, 0, 301, 216, 113, 0, 0, 0, 0, 0, 127, 131, 0, 276, 0, 0, 0, 0, 300, 157, 0, 0, 163, 167, 173, 0, 360, 0, 0, 384, 396, 0, 0, 0, 0, 0, 211, 0, 0, 0, 0, 0, 0, 223, 689, 0, 480, 0 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(1)=5 because between s(1)=4 and s(2)=6 there is one prime 5,` `a(2)=7 because between s(2)=6 and s(3)=9 there is one prime 7,` `a(3)=0 because between s(3)=9 and s(4)=10 there is no primes;` `a(4)=24 because between s(4)=10 and s(5)=14 there are two primes 11 and 13 sum of which is 24, (s(n)=n-th semiprime).`
	CROSSREFS	`Sequence in context: A088394 A021950 A072417 this_sequence A111833 A011378 A019697` `Adjacent sequences: A133409 A133410 A133411 this_sequence A133413 A133414 A133415`
	KEYWORD	`nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Dec 22 2007`

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Last modified December 4 21:35 EST 2008. Contains 151309 sequences.

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