1,2

P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences

Hisanori Mishima, Sporadic tridigital solutions

Cf. A053885.

Adjacent sequences: A053881 A053882 A053883 this_sequence A053885 A053886 A053887

Sequence in context: A015484 A015027 A076168 this_sequence A027880 A028453 A024151

nonn,base,more

Patrick De Geest (pdg(AT)worldofnumbers.com), Mar 15 2000.

One more term from Jon E. Schoenfield (jonscho(AT)hiwaay.net), Sep 03 2006

One more term from Herman Jamke (hermanjamke(AT)fastmail.fm), Dec 23 2007