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A119187 Numbers k such that the k-th triangular number contains only digits {3,5,6}. 2
2, 3, 8, 10, 11, 36, 85, 103, 105, 114, 816, 2696, 3363, 8430, 10617, 10645, 11257, 36211, 327210, 333657, 1032989, 1054071, 3647836, 33336636, 265918617, 36148757471, 259095941942, 326605681382, 1063536896742, 3333666251008 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..30.

G. Resta, Tridigital Triangular Numbers

CROSSREFS

Cf. A000217, A119186. See A119034 for a table of cross-references.

Sequence in context: A047474 A184797 A005454 * A008522 A028732 A028751

Adjacent sequences: A119184 A119185 A119186 * A119188 A119189 A119190

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, May 10 2006

STATUS

approved

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Last modified January 31 04:27 EST 2023. Contains 359947 sequences. (Running on oeis4.)