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A058449
Numbers k such that k^2 contains only digits {0,6,7}, not ending with zero.
1
26, 8226, 818576, 8124474, 26012881552428213576
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..5.
P. De Geest,
Index to related sequences
Hisanori Mishima,
Sporadic tridigital solutions
CROSSREFS
Cf.
A058450
.
Sequence in context:
A232374
A196427
A265979
*
A034244
A263222
A265877
Adjacent sequences:
A058446
A058447
A058448
*
A058450
A058451
A058452
KEYWORD
nonn
,
base
,
hard
,
more
AUTHOR
Patrick De Geest
, Nov 15 2000
EXTENSIONS
One more term from Mishima's webpage added by
Max Alekseyev
, Jul 27 2009
STATUS
approved
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Last modified September 3 05:18 EDT 2024. Contains 375649 sequences. (Running on oeis4.)