id:A039786 - OEIS Search Results

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phi(a(n)) is equal to the multiplicative projection of (a(n)-1).

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3, 5, 7, 9, 11, 13, 23, 29, 31, 43, 47, 53, 59, 61, 67, 71, 79, 83, 103, 107, 131, 139, 149, 157, 167, 173, 179, 191, 211, 223, 227, 229, 239, 263, 269, 277, 283, 293, 311, 317, 331, 347, 349, 359, 367, 373, 383, 389, 419, 421, 431, 439, 443, 461, 463, 467, 479 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Only primes (except 9) may qualify.`
	EXAMPLE	`phi(29)=28, 28=2^27^1, 2271=28.`
	CROSSREFS	`Cf. A000010, A000026.` `Sequence in context: A062090 A133854 A030155 this_sequence A130738 A024323 A118820` `Adjacent sequences: A039783 A039784 A039785 this_sequence A039787 A039788 A039789`
	KEYWORD	`nonn`
	AUTHOR	`Olivier Gerard (ogerard(AT)ext.jussieu.fr)`

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Last modified July 6 17:22 EDT 2008. Contains 140988 sequences.

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