A058452 Squares composed of digits {0,6,9}, not ending with zero.

9, 69696, 660969, 9696996, 6600069696900969, 69096090900990609, 900006066606660060090966606696996, 609660999069000006699096996606066090996096009966990996609

Offset: 1

Author

Patrick De Geest, Nov 15 2000

Keywords

• nonn
• base
• more

Links

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

Crossrefs

Cf. A058451.

Formula

a(n) = A058451(n)^2. - Elmo R. Oliveira, Jul 18 2025

Extensions

a(8) from Zhao Hui Du, Mar 11 2024