A119078 - OEIS

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A119078

Numbers n such that the n-th triangular number contains only digits {0,4,9}.

44, 2831780, 1407437419, 140715344155 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`Next entry must be greater than 1.4*10^16.`
	LINKS	`G. Resta, Tridigital Triangular Numbers`
	CROSSREFS	`Cf. A000217, A119077. See A119034 for a table of cross-references.` `Sequence in context: A131484 A172828 A115734 * A172878 A001782 A172910` `Adjacent sequences: A119075 A119076 A119077 * A119079 A119080 A119081`
	KEYWORD	`nonn,base,more`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), May 10 2006`

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Last modified February 15 16:49 EST 2012. Contains 205824 sequences.