id:A102535 - OEIS Search Results

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Integers n such that -n is representable as the product of the sum of three nonzero integers with the sum of their reciprocals: -n=(x+y+z)*(1/x+1/y+1/z).

+0
5

4, 10, 11, 12, 18, 19, 20, 22, 25, 28, 29, 30, 31, 32, 36, 39, 40, 42, 43, 44, 48, 50, 51, 52, 54, 56, 58, 59, 61, 67, 69, 70, 72, 76, 78, 84, 85, 86, 88, 89, 91, 92, 95, 96, 100, 101, 102, 103, 104, 105, 107, 108, 109, 112, 113, 115, 116, 120, 122, 123 (list; graph; listen)

	OFFSET	`1,1`
	REFERENCES	`A. Bremner, R. K. Guy and R. Nowakowski, Which integers are representable as the product of the sum of three integers with the sum of their reciprocals?, Math. Comp. 61 (1993) 117-130.`
	LINKS	`Allan J. MacLeod, Knight's Problem`
	CROSSREFS	`Cf. A085514, A102778, A102779, A102809.` `Sequence in context: A081547 A111072 A045855 this_sequence A074226 A106631 A120261` `Adjacent sequences: A102532 A102533 A102534 this_sequence A102536 A102537 A102538`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Mar 17 2005`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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