A053906 Numbers k such that k^2 contains only digits {1,6,7}.

1, 4, 26, 131, 276, 881, 3431, 81346, 81619, 129119, 132954, 1292931424

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

Crossrefs

Cf. A053907.

Extensions

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