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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; text; internal format)
OFFSET

1,1

COMMENTS

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

LINKS

Table of n, a(n) for n=1..12.

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119170. See A119034 for a table of cross-references.

Sequence in context: A019257 A288782 A020877 * A119229 A119227 A218631

Adjacent sequences:  A119168 A119169 A119170 * A119172 A119173 A119174

KEYWORD

nonn,base,more

AUTHOR

Giovanni Resta, May 10 2006

STATUS

approved

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Last modified October 17 04:09 EDT 2019. Contains 328106 sequences. (Running on oeis4.)