id:A104724 - OEIS Search Results

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Smallest semiprime containing exactly n 5's.

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15, 55, 1555, 50555, 505555, 1555555, 55255555, 355555555, 5155555555, 52555555555, 155555555555, 1555555555555, 25555555555555, 155555555555555, 5155555555555555, 25555555555555555, 505555555555555555 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(2)=55 because 55 is the smallest semiprime containing exactly two 5's.`
	CROSSREFS	`Sequence in context: A072745 A080698 A082235 this_sequence A106659 A119136 A036522` `Adjacent sequences: A104721 A104722 A104723 this_sequence A104725 A104726 A104727`
	KEYWORD	`base,nonn`
	AUTHOR	`Shyam Sunder Gupta (guptass(AT)rediffmail.com), Apr 24 2005`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research