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A119191 Numbers n such that the n-th triangular number contains only digits {3,5,8}. 2
2, 10, 129, 841229, 26014826114, 3417172921745, 10520014765729 (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..7.

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119190. See A119034 for a table of cross-references.

Sequence in context: A202950 A144835 A305028 * A125993 A185952 A258971

Adjacent sequences:  A119188 A119189 A119190 * A119192 A119193 A119194

KEYWORD

nonn,base,more

AUTHOR

Giovanni Resta, May 10 2006

STATUS

approved

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Last modified March 7 14:00 EST 2021. Contains 341886 sequences. (Running on oeis4.)