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A119161 Numbers k such that the k-th triangular number contains only digits {2,4,6}. 2
3, 11, 36, 923, 23076, 211963, 9656548, 35906663076, 9635790203866668, 35401826004387588 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Next term exceeds 3.1*10^18.

LINKS

Table of n, a(n) for n=1..10.

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119160. See A119034 for a table of cross-references.

Sequence in context: A119054 A119090 A048361 * A119211 A119235 A119233

Adjacent sequences:  A119158 A119159 A119160 * A119162 A119163 A119164

KEYWORD

nonn,base,more

AUTHOR

Giovanni Resta, May 10 2006

EXTENSIONS

a(10) from Max Alekseyev, Jun 16 2011

STATUS

approved

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Last modified August 1 10:37 EDT 2021. Contains 346385 sequences. (Running on oeis4.)