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A119083
Triangular numbers composed of digits {0,5,8}.
2
55, 5050, 500500, 50005000, 5000050000, 500000500000, 558080805855, 50000005000000, 808505508008850, 5000000050000000, 500000000500000000, 50000000005000000000, 5000000000050000000000, 5055055888880005805800, 500000000000500000000000
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..15.
Giovanni Resta, Tridigital Triangular Numbers.
FORMULA
a(n) = A000217(A119084(n)). - Tyler Busby, Mar 27 2023
CROSSREFS
Cf. A000217, A119084. See A119033 for a table of cross-references.
Sequence in context: A056567 A119081 A119051 * A037156 A116110 A358044
Adjacent sequences: A119080 A119081 A119082 * A119084 A119085 A119086
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, May 10 2006
EXTENSIONS
a(15) from Tyler Busby, Mar 27 2023
STATUS
approved

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Last modified April 12 18:43 EDT 2026. Contains 394620 sequences.
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