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Table of n, a(n) for n=1..14.
P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
Sequence in context: A087045 A169801 A103751 * A195800 A224446 A128782
Adjacent sequences: A053956 A053957 A053958 * A053960 A053961 A053962
Patrick De Geest, Mar 15 2000.
More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005
One more term from Jon E. Schoenfield, Sep 04 2006