1,1
P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
Cf. A053975.
Sequence in context: A139897 A085318 A101717 * A201963 A020464 A036943
Adjacent sequences: A053971 A053972 A053973 * A053975 A053976 A053977
nonn,base,more
Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.
More terms from Gareth McCaughan (gareth.mccaughan(AT)pobox.com), Jun 11 2004