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A119215 Numbers n such that the n-th triangular number contains only digits {4,6,9}. 2
3, 11, 31, 36, 43, 96953253343 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Next entry must be greater than 1.4*10^16.

LINKS

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119214. See A119034 for a table of cross-references.

Sequence in context: A003554 A003523 A018781 * A057172 A071568 A093406

Adjacent sequences:  A119212 A119213 A119214 * A119216 A119217 A119218

KEYWORD

nonn,base,more

AUTHOR

Giovanni Resta (g.resta(AT)iit.cnr.it), May 10 2006

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Last modified February 13 22:36 EST 2012. Contains 205567 sequences.