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A058447
Numbers k such that k^2 contains only digits {0,5,9}, not ending with zero.
1
3, 70778174997, 771395165003
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..3.
P. De Geest,
Index to related sequences
Hisanori Mishima,
Sporadic tridigital solutions
CROSSREFS
Cf.
A058448
.
Sequence in context:
A235357
A260002
A368723
*
A275939
A230810
A266199
Adjacent sequences:
A058444
A058445
A058446
*
A058448
A058449
A058450
KEYWORD
nonn
,
base
,
hard
,
more
,
bref
AUTHOR
Patrick De Geest
, Nov 15 2000
STATUS
approved
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Last modified September 15 03:44 EDT 2024. Contains 375931 sequences. (Running on oeis4.)