A119162 Triangular numbers composed of digits {2,4,8}.

28, 48828, 828828, 842288428828, 24884484228828, 28284882828828, 2842448222228428828

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, A027678, A119163. See A119033 for a table of cross-references.

Formula

a(n) = A000217(A119163(n)). - Tyler Busby, Mar 29 2023