A058449 Numbers k such that k^2 contains only digits {0,6,7}, not ending with zero.

26, 8226, 818576, 8124474, 26012881552428213576

Offset: 1

Author

Patrick De Geest, Nov 15 2000

Keywords

• nonn
• base
• hard
• more

Links

• P. De Geest, Index to related sequences
• Hisanori Mishima, Sporadic tridigital solutions

Crossrefs

Cf. A058450.

Extensions

One more term from Mishima's webpage added by Max Alekseyev, Jul 27 2009