id:A119112 - OEIS Search Results

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Numbers n such that the n-th triangular number contains only digits {1,3,4}.

+0
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1, 2, 53, 258, 25746, 53746, 161946, 7930238, 14927378, 29810546, 4714751561, 25742623453 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Next entry must be greater than 1.4*10^16.`
	LINKS	`G. Resta, Tridigital Triangular Numbers`
	CROSSREFS	`Cf. A000217, A119111. See A119034 for a table of cross-references.` `Sequence in context: A130698 A123005 A142477 this_sequence A109791 A119777 A087865` `Adjacent sequences: A119109 A119110 A119111 this_sequence A119113 A119114 A119115`
	KEYWORD	`nonn,base,more`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), May 10 2006`

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.