id:A087719 - OEIS Search Results

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Least number m such that the number of numbers k<=m with k>spf(k)^n exceeds the number of numbers with k<=spf(k)^n.

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15, 27, 57, 135, 345, 927, 2577, 7335, 21225, 62127, 183297, 543735, 1618905 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`m<a(n): #{k: k>spf(k)^n & 1<=k<=m} <= m/2;` `m>=a(n): #{k: k>spf(k)^n & 1<=k<=m} > m/2.`
	FORMULA	`Numbers so far satisfy a(n) = 3^n + 3*2^n + 6. - R. Stephan, May 10 2004`
	CROSSREFS	`Cf. A088382, A088382, A088380, A088381, A000430, A080257.` `Adjacent sequences: A087716 A087717 A087718 this_sequence A087720 A087721 A087722` `Sequence in context: A097222 A004069 A110978 this_sequence A116070 A073766 A031334`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Sep 29 2003`

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Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.