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Table of n, a(n) for n=1..19.
P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
Sequence in context: A076956 A075369 A218523 * A068833 A116190 A070587
Adjacent sequences: A053890 A053891 A053892 * A053894 A053895 A053896
Patrick De Geest, Mar 15 2000.
More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005