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A119193 Numbers k such that the k-th triangular number contains only digits {3,5,9}. 2
2, 10, 34, 109, 8189, 108989, 4470645, 32727845, 1095073836189, 1091781620649419010 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119192. See A119034 for a table of cross-references.

Sequence in context: A196969 A351551 A351550 * A124634 A306099 A192378

Adjacent sequences: A119190 A119191 A119192 * A119194 A119195 A119196

KEYWORD

nonn,base,more

AUTHOR

Giovanni Resta, May 10 2006

EXTENSIONS

a(10) from Max Alekseyev, May 21 2011

STATUS

approved

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Last modified February 7 07:00 EST 2023. Contains 360112 sequences. (Running on oeis4.)