id:A008331 - OEIS Search Results

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phi(p+1), p prime.

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2, 2, 2, 4, 4, 6, 6, 8, 8, 8, 16, 18, 12, 20, 16, 18, 16, 30, 32, 24, 36, 32, 24, 24, 42, 32, 48, 36, 40, 36, 64, 40, 44, 48, 40, 72, 78, 80, 48, 56, 48, 72, 64, 96, 60, 80, 104, 96, 72, 88, 72, 64, 110, 72, 84, 80, 72, 128, 138, 92, 140, 84, 120, 96, 156, 104, 164, 156, 112, 120, 116 (list; graph; listen)

	OFFSET	`2,1`
	MAPLE	`for i from 1 to 500 do if isprime(i) then print(phi(i+1)); fi; od;`
	CROSSREFS	`Cf. A000010.` `Sequence in context: A005859 A134318 A104295 this_sequence A097196 A132325 A010238` `Adjacent sequences: A008328 A008329 A008330 this_sequence A008332 A008333 A008334`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research