A119190 Triangular numbers composed of digits {3,5,8}.

3, 55, 8385, 353833535835, 338385588883835583555, 5838535388555338533383385, 55335355335583353383833585

Offset: 1

Author

Giovanni Resta, May 10 2006

Keywords

• nonn
• base
• more

Comments

a(8) > 10^40. - Tyler Busby, Mar 29 2023

Links

• Giovanni Resta, Tridigital Triangular Numbers.

Crossrefs

Cf. A000217, A119191. See A119033 for a table of cross-references.

Formula

a(n) = A000217(A119191(n)). - Tyler Busby, Mar 29 2023