id:A064601 - OEIS Search Results

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a(n) = # { p | A064558(k) = p prime and k <= n}.

+0
2

0, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`As in A064553 primes occur in A064558 in natural order but are far less dense.`
	CROSSREFS	`Cf. A064558, A000720, A064557, A064600.` `Sequence in context: A076634 A083277 A064557 this_sequence A023967 A090532 A003058` `Adjacent sequences: A064598 A064599 A064600 this_sequence A064602 A064603 A064604`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Sep 22 2001`

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

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