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A119082 - OEIS
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A119082
Numbers k such that the k-th triangular number contains only digits {0,5,7}.
2
10, 100, 124, 375, 1000, 10000, 100000, 1000000, 3924474, 10000000, 100000000, 387492084, 1000000000, 3885885999, 10000000000, 31804089540, 39371996915, 100000000000, 122929061474, 1000000000000, 10000000000000
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..21.
G. Resta, Tridigital Triangular Numbers
CROSSREFS
Cf. A000217, A119081. See A119034 for a table of cross-references.
Sequence in context: A035504 A072366 A349316 * A116143 A208497 A207585
Adjacent sequences: A119079 A119080 A119081 * A119083 A119084 A119085
KEYWORD
nonn,base
AUTHOR
Giovanni Resta, May 10 2006
STATUS
approved

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Last modified October 3 12:00 EDT 2024. Contains 376490 sequences.
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