A119177 Numbers k such that the k-th triangular number contains only digits {2,6,9}.

3, 11, 36, 76, 7741188, 21305723, 4471447856, 24343059348, 6673334543723, 23094123478785548

Offset: 1

Author

Giovanni Resta, May 10 2006

Keywords

• nonn
• base
• more

Links

• Giovanni Resta, Tridigital Triangular Numbers.

Crossrefs

Cf. A000217, A119176. See A119034 for a table of cross-references.

Extensions

a(10) from Tyler Busby, Mar 31 2023