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A119153 Numbers k such that the k-th triangular number contains only digits {2,3,5}. 2
2, 10, 22, 25, 102, 714, 2114, 2170, 2550, 21097, 671302, 258973177, 1023088777, 22460425354, 211297574645 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Next term exceeds 1.4*10^16.

LINKS

Table of n, a(n) for n=1..15.

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119152. See A119034 for a table of cross-references.

Sequence in context: A303294 A302566 A333702 * A339486 A273993 A225290

Adjacent sequences:  A119150 A119151 A119152 * A119154 A119155 A119156

KEYWORD

nonn,base,more

AUTHOR

Giovanni Resta, May 10 2006

STATUS

approved

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Last modified September 26 13:25 EDT 2021. Contains 347668 sequences. (Running on oeis4.)