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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Next term exceeds 4.4*10^18.

LINKS

Table of n, a(n) for n=1..6.

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119234. See A119034 for a table of cross-references.

Sequence in context: A048361 A119161 A119211 * A119233 A178563 A069358

Adjacent sequences:  A119232 A119233 A119234 * A119236 A119237 A119238

KEYWORD

nonn,base,more

AUTHOR

Giovanni Resta, May 10 2006

EXTENSIONS

Lower bound updated by Max Alekseyev, Apr 30 2010

STATUS

approved

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Last modified December 6 01:25 EST 2021. Contains 349558 sequences. (Running on oeis4.)