id:A119159 - OEIS Search Results

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Numbers n such that the n-th triangular number contains only digits {2,4,5}.

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9, 10, 225, 714, 6714, 22114, 2119209, 2211449, 102523609, 942573334, 95336514049 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Next entry must be greater than 1.4*10^16.`
	LINKS	`G. Resta, Tridigital Triangular Numbers`
	CROSSREFS	`Cf. A000217, A119158. See A119034 for a table of cross-references.` `Sequence in context: A136881 A041177 A041178 this_sequence A041415 A103869 A041753` `Adjacent sequences: A119156 A119157 A119158 this_sequence A119160 A119161 A119162`
	KEYWORD	`nonn,base,more`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), May 10 2006`

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Last modified December 4 15:11 EST 2009. Contains 170347 sequences.