0,2

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

P. De Geest, Palindromic Squares

A. Ottens, The arithmetic-digits-squares-three.digits problem

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

Cf. A027676.

Sequence in context: A131770 A076651 A081410 this_sequence A103787 A032473 A084422

Adjacent sequences: A027674 A027675 A027676 this_sequence A027678 A027679 A027680

nonn,base

Patrick De Geest (pdg(AT)worldofnumbers.com)