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A119139 Numbers k such that the k-th triangular number contains only digits {1,5,9}. 2
1, 5, 10, 13, 34, 101, 109, 138, 1738, 10114, 19794, 1011090, 1019010, 1054130, 1091010, 34406858, 178858133, 565606858, 4289521091010, 55841058721258 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Next term exceeds 1.4*10^16.
LINKS
CROSSREFS
Cf. A000217, A119138. See A119034 for a table of cross-references.
Sequence in context: A321558 A328667 A317966 * A313451 A164889 A173553
KEYWORD
nonn,base,more
AUTHOR
Giovanni Resta, May 10 2006
STATUS
approved

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Last modified April 13 12:46 EDT 2024. Contains 371641 sequences. (Running on oeis4.)