id:A091294 - OEIS Search Results

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n is such that phi[n]=phi[3n+1].

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75973, 301513, 2053393, 3404053, 4022573, 5399123, 6461473, 8395613, 9848813, 11804173, 14124133, 15680573, 17173333, 20705533, 23609083, 28988353, 30290563, 32845633, 35025943 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Is it accidental that most terms have form 10k+3?`
	MATHEMATICA	`Do[If[Equal[EulerPhi[n], EulerPhi[3*n+1]], Print[n]], {n, 1, 100000000}]`
	CROSSREFS	`Cf. A000010, A092272.` `Sequence in context: A045731 A140940 A135209 this_sequence A096518 A096888 A049026` `Adjacent sequences: A091291 A091292 A091293 this_sequence A091295 A091296 A091297`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Feb 19 2004`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research