A119203 Numbers k such that the k-th triangular number contains only digits {4,5,6}.

3, 9, 10, 11, 30, 36, 94, 96, 105, 114, 305, 1043, 2988, 3303, 3363, 11363, 3021769, 3054388, 10627009, 33330030, 33330036, 33336636, 94302243, 115470036, 305177471, 336352955885, 330353339515569, 955663806624114

Offset: 1

Author

Giovanni Resta, May 10 2006

Keywords

• nonn
• base

Links

• G. Resta, Tridigital Triangular Numbers

Crossrefs

Cf. A000217, A119202. See A119034 for a table of cross-references.