A053884 Numbers k such that k^2 contains only digits {1,2,7}.

1, 11, 1489, 4596489, 4144600242739, 130834904430015239

Offset: 1

Author

Patrick De Geest, Mar 15 2000

Keywords

• nonn
• base
• more

Links

• P. De Geest, Squares containing at most three distinct digits, Index entries for related sequences
• Hisanori Mishima, Sporadic tridigital solutions

Crossrefs

Cf. A053885.

Extensions

One more term from Jon E. Schoenfield, Sep 03 2006

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