1,2
Table of n, a(n) for n=1..24.
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, Square Number.
Cf. A027677.
Sequence in context: A275123 A275217 A158988 * A249567 A177398 A227312
Adjacent sequences: A027673 A027674 A027675 * A027677 A027678 A027679
nonn,base
Patrick De Geest
approved