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A053968
Numbers k such that k^2 contains only digits {5,6,7}.
1
24, 26, 76, 869924, 2582184474, 75349689155076, 75879284173334, 815816631091556424, 881854102200458483334, 2562353735836753390526
OFFSET
1,1
CROSSREFS
Cf. A053969.
Sequence in context: A053680 A260251 A295007 * A336237 A058627 A286130
KEYWORD
nonn,base,more
AUTHOR
Patrick De Geest, Mar 15 2000
EXTENSIONS
More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005
Two more terms from Jon E. Schoenfield, Sep 04 2006
Three more terms from Mishima's website added by Max Alekseyev, May 02 2011
STATUS
approved