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%I #7 Jul 13 2021 21:29:48
%S 3,9,10,11,30,36,94,96,105,114,305,1043,2988,3303,3363,11363,3021769,
%T 3054388,10627009,33330030,33330036,33336636,94302243,115470036,
%U 305177471,336352955885,330353339515569,955663806624114
%N Numbers k such that the k-th triangular number contains only digits {4,5,6}.
%H G. Resta, <a href="http://www.numbersaplenty.com/tr/tr456.html">Tridigital Triangular Numbers</a>
%Y Cf. A000217, A119202. See A119034 for a table of cross-references.
%K nonn,base
%O 1,1
%A _Giovanni Resta_, May 10 2006