id:A079548 - OEIS Search Results

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

+0
4

0, 0, 1, 0, 0, 1, 0, 2, 1, 2, 0, 0, 0, 0, 1, 0, 4, 2, 4, 1, 4, 0, 0, 4, 0, 2, 2, 1, 0, 6, 0, 8, 2, 6, 1, 4, 0, 0, 6, 0, 0, 4, 2, 0, 3, 0, 6, 4, 12, 2, 16, 2, 8, 3, 6, 0, 0, 0, 0, 6, 0, 4, 0, 0, 2, 1, 0, 10, 4, 12, 4, 24, 2, 16, 6, 12, 1, 8, 0, 0, 10, 0, 6, 8, 0, 0, 12, 4, 2, 4, 1, 0, 12, 0, 20, 0, 18, 4, 24 (list; table; graph; listen)

	OFFSET	`1,8`
	COMMENT	`It follows from the definition that n*phi(m) - phi(mn) >= 0.`
	REFERENCES	`D. S. Mitrinovic et al., Handbook of Number Theory, Kluwer, p. 9.`
	CROSSREFS	`Cf. A000010, A076953, A079549, A079550.` `Adjacent sequences: A079545 A079546 A079547 this_sequence A079549 A079550 A079551` `Sequence in context: A089538 A152439 A070965 this_sequence A079071 A050602 A065040`
	KEYWORD	`nonn,tabl`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Jan 24 2003`

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Last modified November 8 20:39 EST 2009. Contains 166234 sequences.

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