A119153 Numbers k such that the k-th triangular number contains only digits {2,3,5}.

2, 10, 22, 25, 102, 714, 2114, 2170, 2550, 21097, 671302, 258973177, 1023088777, 22460425354, 211297574645, 668630474213122229

Offset: 1

Author

Giovanni Resta, May 10 2006

Keywords

• nonn
• base
• more

Links

• Giovanni Resta, Tridigital Triangular Numbers.

Crossrefs

Cf. A000217, A119152. See A119034 for a table of cross-references.

Extensions

a(16) from Tyler Busby, Mar 31 2023