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%I #8 Jul 13 2021 07:32:24
%S 1,2,5,10,17,26,101,257,266,2657,2666,8382,10114,10130,26657,26666,
%T 55733,101342,103453,176257,266657,266666,553778,557342,794142,843010,
%U 1645085,2666657,2666666,3209770,4723421,26666657,26666666,84042269
%N Numbers k such that the k-th triangular number contains only digits {1,3,5}.
%H G. Resta, <a href="http://www.numbersaplenty.com/tr/tr135.html">Tridigital Triangular Numbers</a>
%Y Cf. A000217, A119113. See A119034 for a table of cross-references.
%K nonn,base
%O 1,2
%A _Giovanni Resta_, May 10 2006
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