A119183 Numbers k such that the k-th triangular number contains only digits {3,4,5}.

2, 9, 10, 29, 262, 954, 2590, 2662, 9534, 25862, 26662, 82865, 95334, 104262, 266662, 298514, 2666662, 10338610, 26666662, 30151462, 103493337, 266290989, 266666662, 1043584537, 2666666662, 3302531009, 10531233862, 26288192537

Offset: 1

Author

Giovanni Resta, May 10 2006

Keywords

• nonn
• base

Links

• G. Resta, Tridigital Triangular Numbers

Crossrefs

Cf. A000217, A119182. See A119034 for a table of cross-references.