id:A048543 - OEIS Search Results

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a(n)*(a(n)+1) is smallest pronic number containing exactly n 7's.

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8, 108, 878, 870, 8813, 27924, 84129, 882483, 2788865, 7601169, 88190572, 421518419 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Eric Weisstein's World of Mathematics, Pronic Number`
	CROSSREFS	`Cf. A048544, A002378.` `Adjacent sequences: A048540 A048541 A048542 this_sequence A048544 A048545 A048546` `Sequence in context: A105261 A099762 A119936 this_sequence A120975 A099699 A084915`
	KEYWORD	`nonn,base,more`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), May 15 1999.`

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Last modified October 16 16:43 EDT 2008. Contains 145098 sequences.