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%I #11 Apr 06 2023 21:42:06
%S 3,55,8385,353833535835,338385588883835583555,
%T 5838535388555338533383385,55335355335583353383833585
%N Triangular numbers composed of digits {3,5,8}.
%C a(8) > 10^40. - _Tyler Busby_, Mar 29 2023
%H Giovanni Resta, <a href="http://www.numbersaplenty.com/tr/tr358.html">Tridigital Triangular Numbers</a>.
%F a(n) = A000217(A119191(n)). - _Tyler Busby_, Mar 29 2023
%Y Cf. A000217, A119191. See A119033 for a table of cross-references.
%K nonn,base,more
%O 1,1
%A _Giovanni Resta_, May 10 2006