id:A166678 - OEIS Search Results

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Pi[(sqrt[ p_k!! ] +1)^2] -Pi [p_k!! ], where Pi(n) = number of primes <=n; P!! = 2*3*5*7*...*p ; p_k is kth prime.

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2, 2, 3, 6, 14, 34, 110, 384, 1540, 7019, 34501, 183439 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Conjecture: k <= Pi((Sqrt[p_k!! ]+1)^2) - Pi(p_k!!)`
	CROSSREFS	`Sequence in context: A064674 A095902 A103687 this_sequence A032908 A060631 A096100` `Adjacent sequences: A166675 A166676 A166677 this_sequence A166679 A166680 A166681`
	KEYWORD	`nonn`
	AUTHOR	`Daniel Tisdale (daniel6874(AT)gmail.com), Oct 18 2009, Oct 23 2009`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.