id:A119042 - OEIS Search Results

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A119042

Numbers n such that the n-th triangular number contains only digits {0,1,6}.

+0
3

1, 3, 4, 11, 36, 141, 179, 363, 1095, 3633, 4473, 4704, 36333, 44758, 46079, 46904, 57620, 1414920, 1460141, 4474371, 14560288, 348310541, 1822424761720, 34670191840011, 471172177895936, 4472359691719799 (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, A119041. See A119034 for a table of cross-references.` `Sequence in context: A019169 A049979 A038559 this_sequence A042273 A037185 A101982` `Adjacent sequences: A119039 A119040 A119041 this_sequence A119043 A119044 A119045`
	KEYWORD	`nonn,base,more`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), May 10 2006`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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