A053884 - OEIS

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A053884

Numbers n such that n^2 contains only digits {1,2,7}.

1, 11, 1489, 4596489, 4144600242739, 130834904430015239 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	LINKS	`P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences` `Hisanori Mishima, Sporadic tridigital solutions`
	CROSSREFS	`Cf. A053885.` `Sequence in context: A015027 A160264 A076168 * A027880 A028453 A024151` `Adjacent sequences: A053881 A053882 A053883 * A053885 A053886 A053887`
	KEYWORD	`nonn,base,more`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.`
	EXTENSIONS	`One more term from Jon E. Schoenfield (jonscho(AT)hiwaay.net), Sep 03 2006` `One more term from Herman Jamke (hermanjamke(AT)fastmail.fm), Dec 23 2007`

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Last modified February 13 10:03 EST 2012. Contains 205451 sequences.