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A119090
Numbers k such that the k-th triangular number contains only digits {0,6,8}.
2
3, 11, 36, 363, 1095, 1271283, 3687839, 34642771, 3705851211, 133181080239, 365754039996, 127034546483126864, 1333271810847736239, 4001669872957554920, 1264918091110097664483, 1269646312961849126691
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..16.
Giovanni Resta,
Tridigital Triangular Numbers
CROSSREFS
Cf.
A000217
,
A119089
. See
A119034
for a table of cross-references.
Sequence in context:
A068644
A286318
A119054
*
A048361
A119161
A119211
Adjacent sequences:
A119087
A119088
A119089
*
A119091
A119092
A119093
KEYWORD
nonn
,
base
,
more
AUTHOR
Giovanni Resta
, May 10 2006
EXTENSIONS
a(12)-a(14) from
Tyler Busby
, Mar 30 2023
a(15)-a(16) from
Bert Dobbelaere
, Mar 14 2026
STATUS
approved