OFFSET
1,2
EXAMPLE
a(9) = 1113111511681 because there is no smaller square number with 9 copies of the same nonzero digit. a(9) has 9 1's.
CROSSREFS
KEYWORD
nonn,base,more
AUTHOR
Randy L. Ekl, Apr 17 2008
EXTENSIONS
Edited by N. J. A. Sloane at the suggestion of Jon E. Schoenfield, Jan 11 2009
a(12)-a(15) from Jon E. Schoenfield, Jan 14 2009
a(16) from Jon E. Schoenfield, Jan 17 2009
STATUS
approved