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A119119
Triangular numbers composed of digits {1,3,8}.
2
1, 3, 88831, 1188111, 38311881, 11313313831, 83388881331381, 881388838113181838838811, 8138133831331381318318881, 183113183318838311383311313311, 133831381813113188111133181833111, 31188113313888818318833183383131131
OFFSET
1,2
COMMENTS
No other terms below 10^41. - Tyler Busby, Mar 28 2023
FORMULA
a(n) = A000217(A119120(n)). - Tyler Busby, Mar 28 2023
CROSSREFS
Cf. A000217, A053895, A119120. See A119033 for a table of cross-references.
Sequence in context: A230719 A213000 A151594 * A164841 A171366 A292691
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, May 10 2006
EXTENSIONS
Two more terms from Max Alekseyev, May 12 2009
STATUS
approved