A088700 - OEIS

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A088700

Number of primes between successive semiprimes.

1, 1, 0, 2, 0, 2, 0, 1, 0, 2, 0, 0, 1, 0, 2, 1, 0, 1, 0, 0, 2, 0, 1, 2, 0, 1, 1, 0, 0, 1, 0, 0, 0, 3, 2, 1, 0, 0, 0, 0, 0, 1, 1, 0, 2, 0, 0, 0, 0, 2, 1, 0, 0, 1, 1, 1, 0, 2, 0, 0, 2, 2, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 3, 0, 2, 0, 1, 0, 1, 0, 1, 0, 2, 1, 2, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 2, 1, 0, 0 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,4`
	COMMENTS	`a(n) = A000720(A001358(n+1)) - A000720(A001358(n));` `a(A088701(n))=n and a(k)<>n for 1<=k < A088701(n).`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..1000` `Eric Weisstein's World of Mathematics, Prime Counting Function` `Eric Weisstein's World of Mathematics, Semiprime`
	EXAMPLE	`a(34)=3, as there are three primes between A001358(34)=195=95` `and A001358(34+1)=532=106: 97, 101 and 103.`
	CROSSREFS	`Cf. A103668 (semiprimes between primes)` `Sequence in context: A039974 A039973 A035171 * A035446 A126211 A095414` `Adjacent sequences: A088697 A088698 A088699 * A088701 A088702 A088703`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 08 2003`

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Last modified February 16 20:28 EST 2012. Contains 205962 sequences.