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A119070 Numbers n such that the n-th triangular number contains only digits {0,3,9}. 2
2, 24, 42, 44, 77, 260, 282, 824, 1364, 8835, 44517, 88419, 89375, 256917, 282842, 426600, 2603844, 14141435, 424287482, 894359435, 24629287602, 81351102024, 137064943244, 1371082295364, 2489711201364, 8870066515082 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..26.

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119069. See A119034 for a table of cross-references.

Sequence in context: A280648 A119066 A019996 * A181283 A073215 A111035

Adjacent sequences:  A119067 A119068 A119069 * A119071 A119072 A119073

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, May 10 2006

STATUS

approved

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Last modified October 1 17:45 EDT 2020. Contains 337444 sequences. (Running on oeis4.)