A053882 Numbers k such that k^2 contains only digits {1,2,6}.

1, 4, 11, 46, 511, 1619, 78881, 81404, 81619, 161761, 1105046, 1456404, 4595881, 814010204, 128884685369, 112366637002369, 47130268582155593596, 51595698572871617009432954

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. A053883.

Extensions

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 14 2005

a(18) from Zhao Hui Du, Feb 28 2024