m has an exclusionary square if m consists of distinct digits and m^2 is made up only of digits not appearing in m.
Table of n, a(n) for n=1..9.
Cf. A112321, A110816.
Sequence in context: A242997 A221135 A110816 * A281535 A110071 A256703
Adjacent sequences: A112319 A112320 A112321 * A112323 A112324 A112325
Lekraj Beedassy and Klaus Brockhaus, Sep 08 2005