A119084 Numbers k such that the k-th triangular number contains only digits {0,5,8}.

10, 100, 1000, 10000, 100000, 1000000, 1056485, 10000000, 40212075, 100000000, 1000000000, 10000000000, 100000000000, 100549051600, 1000000000000, 10000000000000, 100000000000000, 421438146839024, 1000000000000000

Offset: 1

Author

Giovanni Resta, May 10 2006

Keywords

• nonn
• base

Links

• G. Resta, Tridigital Triangular Numbers

Crossrefs

Cf. A000217, A119083. See A119034 for a table of cross-references.