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URL: https://oeis.org/A119232

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A119232
Triangular numbers composed of digits {6,7,9}.
2
6, 66, 666, 677766969666676, 66799696699976679697696799766996696
OFFSET
1,1
COMMENTS
a(6) > 10^40. - Tyler Busby, Mar 29 2023
FORMULA
a(n) = A000217(A119233(n)). - Michel Marcus, Mar 27 2023
CROSSREFS
Cf. A000217, A053973, A119233. See A119033 for a table of cross-references.
Sequence in context: A119210 A227220 A119234 * A186675 A186673 A213453
KEYWORD
nonn,base,more
AUTHOR
Giovanni Resta, May 10 2006
EXTENSIONS
a(5) from Max Alekseyev, Mar 10 2009
STATUS
approved