id:A049511 - OEIS Search Results

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Numbers n such that prime(n) == 1 mod 10.

+0
5

5, 11, 13, 18, 20, 26, 32, 36, 42, 43, 47, 53, 54, 58, 60, 64, 67, 79, 82, 83, 89, 94, 98, 100, 105, 110, 115, 116, 121, 125, 126, 133, 135, 141, 142, 152, 156, 160, 164, 167, 172, 173, 177, 178, 182, 190, 193, 194, 197, 202, 210, 212, 216, 218, 221, 230, 233 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) = PrimePi(A030430(n-1)).`
	MATHEMATICA	`Select[Range[210], Mod[Prime[ # ], 10] == 1 &] (Chandler)`
	CROSSREFS	`Cf. A024912, A030430, A081759.` `Sequence in context: A003632 A019354 A124662 this_sequence A024900 A087490 A079019` `Adjacent sequences: A049508 A049509 A049510 this_sequence A049512 A049513 A049514`
	KEYWORD	`nonn`
	AUTHOR	`njas`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Nov 28 2003`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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