id:A119117 - OEIS Search Results

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A119117

Triangular numbers composed of digits {1,3,7}.

+0
3

1, 3, 171, 1711, 1717731, 17131731, 1313137337331, 117717311713137711, 773113771333731171, 3773733771711731311, 177177371373713177137131, 311733717173773173111771, 3311337711173711371777131 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`G. Resta, Tridigital Triangular Numbers`
	CROSSREFS	`Cf. A000217, A119118. See A119033 for a table of cross-references.` `Sequence in context: A137476 A116506 A032484 this_sequence A136473 A053930 A053920` `Adjacent sequences: A119114 A119115 A119116 this_sequence A119118 A119119 A119120`
	KEYWORD	`nonn,base`
	AUTHOR	`Giovanni Resta (g.resta(AT)iit.cnr.it), May 10 2006`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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