id:A108221 - OEIS Search Results

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Primes of the form ceiling(sqrt(prime(n))).

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2, 2, 3, 3, 5, 5, 5, 7, 7, 7, 7, 11, 11, 11, 11, 11, 13, 13, 13, 13, 13, 17, 17, 17, 17, 17, 17, 17, 19, 19, 19, 19, 19, 19, 23, 23, 23, 23, 23, 23, 23, 29, 29, 29, 29, 29, 29, 29, 29, 29, 31, 31, 31, 31, 31, 31, 31, 31, 37, 37, 37, 37, 37, 37, 37, 37, 37, 41, 41, 41, 41, 41, 41 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) = ceiling(sqrt(A108222(n))).`
	MATHEMATICA	`Ceiling /@ Sqrt /@ Select[Prime /@ Range[300], PrimeQ[Ceiling[Sqrt[ # ]]] &] (Chandler)`
	CROSSREFS	`Sequence in context: A057872 A059974 A045767 this_sequence A082524 A099961 A038810` `Adjacent sequences: A108218 A108219 A108220 this_sequence A108222 A108223 A108224`
	KEYWORD	`easy,nonn`
	AUTHOR	`Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Jun 16 2005`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 03 2005`

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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.

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