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. A027677.

Sequence in context: A001264 A114399 A029993 this_sequence A006811 A005755 A077821

Adjacent sequences: A027673 A027674 A027675 this_sequence A027677 A027678 A027679

nonn,base

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