A119157 Numbers k such that the k-th triangular number contains only digits {2,3,8}.

2, 7, 87, 1287, 881287, 21158087, 25800318712, 7535029241912

Offset: 1

Author

Giovanni Resta, May 10 2006

Keywords

• nonn
• base
• more

Comments

Next term exceeds 4.4*10^20.

Links

• G. Resta, Tridigital Triangular Numbers

Crossrefs

Cf. A000217, A119156. See A119034 for a table of cross-references.

Extensions

Lower bound for the next term updated by Max Alekseyev, May 21 2009, Mar 05 2023