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A119235
Numbers k such that the k-th triangular number contains only digits {6,8,9}.
2
3, 11, 36, 371211, 421186108, 1180677745929588
OFFSET
1,1
COMMENTS
Next term exceeds 4.4*10^18.
CROSSREFS
Cf. A000217, A119234. See A119034 for a table of cross-references.
Sequence in context: A048361 A119161 A119211 * A119233 A178563 A069358
KEYWORD
nonn,base,more
AUTHOR
Giovanni Resta, May 10 2006
EXTENSIONS
Lower bound updated by Max Alekseyev, Apr 30 2010
STATUS
approved