1,2
P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
Cf. A031153.
Adjacent sequences: A031148 A031149 A031150 this_sequence A031152 A031153 A031154
Sequence in context: A078815 A036057 A083509 this_sequence A016970 A062938 A141722
nonn,base
Patrick De Geest (pdg(AT)worldofnumbers.com)
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