A119161 Numbers k such that the k-th triangular number contains only digits {2,4,6}.

3, 11, 36, 923, 23076, 211963, 9656548, 35906663076, 9635790203866668, 35401826004387588

Offset: 1

Author

Giovanni Resta, May 10 2006

Keywords

• nonn
• base
• more

Comments

Next term exceeds 3.1*10^18.

Links

• G. Resta, Tridigital Triangular Numbers

Crossrefs

Cf. A000217, A119160. See A119034 for a table of cross-references.

Extensions

a(10) from Max Alekseyev, Jun 16 2011