id:A086007 - OEIS Search Results

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Number of semiprime triples <= n.

+0
1

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 (list; graph; listen)

	OFFSET	`1,85`
	COMMENT	`A semiprime triple is <= n if its least member is <= n;` `if a(n-1)<a(n) then (n,n+1,n+2) is a semiprime tripel, A086005(a(n))=n+1.`
	CROSSREFS	`Cf. A001358, A086005.` `Sequence in context: A100801 A104230 A069903 this_sequence A108582 A071840 A000193` `Adjacent sequences: A086004 A086005 A086006 this_sequence A086008 A086009 A086010`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Jul 07 2003`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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