A058463 - OEIS

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A058463

Numbers k such that k^2 contains only digits {3,4,7}.

2, 88, 688, 8564136525847038, 21150351639576462, 20913496712251033188, 1864878916830083039312 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	LINKS	`Table of n, a(n) for n=1..7.` `P. De Geest, Index to related sequences` `Hisanori Mishima, Sporadic tridigital solutions`
	CROSSREFS	`Cf. A058464.` `Sequence in context: A273520 A066226 A058439 * A166848 A283631 A001904` `Adjacent sequences: A058460 A058461 A058462 * A058464 A058465 A058466`
	KEYWORD	`nonn,base,hard,more`
	AUTHOR	`Patrick De Geest, Nov 15 2000`
	EXTENSIONS	`More terms from Mishima's webpage added by Max Alekseyev, May 30 2009`
	STATUS	`approved`

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Last modified March 27 20:39 EDT 2023. Contains 361575 sequences. (Running on oeis4.)