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A119171 Numbers n such that the n-th triangular number contains only digits {2,5,9}. 2
10, 34, 109, 714, 765, 774, 227825, 14092049, 334531090, 33345441365, 1360847497350, 102951958915365 (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, A119170. See A119034 for a table of cross-references.

Sequence in context: A009924 A019257 A020877 * A119229 A119227 A166066

Adjacent sequences:  A119168 A119169 A119170 * A119172 A119173 A119174

KEYWORD

nonn,base,more

AUTHOR

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

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Last modified February 16 08:13 EST 2012. Contains 205893 sequences.