A163370 - OEIS

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A163370

phi(sigma(phi(n)))

1, 1, 2, 2, 6, 2, 4, 6, 4, 6, 6, 6, 12, 4, 8, 8, 30, 4, 24, 8, 12, 6, 12, 8, 12, 12, 24, 12, 24, 8, 24, 30, 12, 30, 16, 12, 72, 24, 16, 30, 24, 12, 32, 12, 16, 12, 24, 30, 32, 12 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	COMMENTS	`a(n) = A000010(A000203(A000010(n))) = A000010(A062402(n)) = A062401(A000010(n)).`
	CROSSREFS	`Sequence in context: A062401 A138949 A138951 * A071796 A121699 A080404` `Adjacent sequences: A163367 A163368 A163369 * A163371 A163372 A163373`
	KEYWORD	`nonn`
	AUTHOR	`Jaroslav Krizek (jaroslav.krizek(AT)atlas.cz), Jul 25 2009`

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Last modified February 13 20:14 EST 2012. Contains 205553 sequences.