id:A049509 - OEIS Search Results

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Numbers n such that prime(n) == 7 mod 10.

+0
3

4, 7, 12, 15, 19, 25, 28, 31, 33, 37, 39, 45, 49, 55, 59, 63, 66, 68, 69, 73, 78, 88, 91, 93, 101, 102, 106, 107, 111, 113, 118, 123, 129, 134, 138, 139, 144, 148, 151, 154, 155, 159, 161, 163, 165, 168, 181, 184, 187, 195, 199, 203, 206, 211, 214, 217, 219, 225 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) = PrimePi(A030432(n-1)).`
	MATHEMATICA	`Select[Range[240], Mod[Prime[ # ], 10] == 7 &] (Chandler)`
	CROSSREFS	`Cf. A030432, A102342.` `Sequence in context: A058271 A085048 A024813 this_sequence A026360 A047535 A061503` `Adjacent sequences: A049506 A049507 A049508 this_sequence A049510 A049511 A049512`
	KEYWORD	`nonn`
	AUTHOR	`njas`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 07 2006`

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Last modified September 7 15:23 EDT 2008. Contains 143483 sequences.

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