id:A076953 - OEIS Search Results

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Array T(m,n) = phi(mn)-phi(m)phi(n) (m,n >= 1), read by antidiagonals.

+0
4

0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 4, 0, 2, 0, 0, 0, 2, 0, 0, 2, 0, 0, 0, 4, 0, 4, 4, 4, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 6, 8, 0, 8, 0, 8, 6, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 8, 0, 8, 6, 8, 0, 8, 0, 4, 0, 0, 0, 4, 0, 4, 6, 0, 0, 6, 4, 0, 4, 0, 0 (list; table; graph; listen)

	OFFSET	`1,12`
	COMMENT	`It follows from the definition that phi(mn)-phi(m)phi(n) >= 0.`
	REFERENCES	`D. S. Mitrinovic et al., Handbook of Number Theory, Kluwer, p. 9.`
	CROSSREFS	`Cf. A000010, A079548, A079549, A079550.` `Sequence in context: A016414 A049801 A049337 this_sequence A093315 A132784 A133873` `Adjacent sequences: A076950 A076951 A076952 this_sequence A076954 A076955 A076956`
	KEYWORD	`nonn,tabl`
	AUTHOR	`njas, Jan 24 2003`

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Last modified November 30 22:12 EST 2008. Contains 150989 sequences.

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