id:A071694 - OEIS Search Results

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Number of ways to write n as n = x*y*z/(x+y+z) 1<=x<=y<=z<=n.

+0
1

0, 0, 1, 0, 1, 0, 1, 2, 2, 1, 2, 3, 1, 3, 5, 3, 2, 3, 2, 7, 5, 1, 3, 8, 2, 4, 8, 4, 3, 5, 2, 9, 5, 2, 14, 12, 1, 4, 10, 10, 3, 5, 2, 11, 11, 2, 4, 13, 5, 10, 8, 6, 3, 14, 12, 22, 5, 1, 5, 14, 1, 5, 22, 11, 13, 11, 2, 11, 9, 6, 5, 19, 1, 5, 19, 10, 13, 6, 4, 33, 14, 1, 5, 24, 6, 6, 11, 10, 5 (list; graph; listen)

	OFFSET	`1,8`
	PROGRAM	`(PARI) for(n=1, 90, print1(sum(a=1, n, sum(b=1, a, sum(c=1, b, if(abc/(a+b+c)-n, 0, 1)))), ", "))`
	CROSSREFS	`Sequence in context: A023572 A077766 A002345 this_sequence A072781 A046923 A056173` `Adjacent sequences: A071691 A071692 A071693 this_sequence A071695 A071696 A071697`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 23 2002`

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

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