id:A119129 - OEIS Search Results

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Numbers n such that the n-th triangular number contains only digits {1,4,8}.

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1, 478, 1541, 4866, 988113, 4216353, 15155321, 16977521, 983990258, 531956543121, 544826911685686 (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, A119128. See A119034 for a table of cross-references.` `Sequence in context: A048428 A020375 A031788 this_sequence A122268 A056987 A025025` `Adjacent sequences: A119126 A119127 A119128 this_sequence A119130 A119131 A119132`
	KEYWORD	`nonn,base,more`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), May 10 2006`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.