A058459 - OEIS

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A058459

Numbers n such that n^2 contains only digits {2,4,7}.

2, 88, 88002411582, 47146022358675418 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	LINKS	`P. De Geest, Index to related sequences` `Hisanori Mishima, Sporadic tridigital solutions`
	CROSSREFS	`Cf. A058460.` `Sequence in context: A053950 A012728 A012733 * A105268 A139881 A161676` `Adjacent sequences: A058456 A058457 A058458 * A058460 A058461 A058462`
	KEYWORD	`nonn,base,hard,more`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Nov 15 2000.`

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Last modified February 17 07:30 EST 2012. Contains 205998 sequences.