Numbers k such that k^2 contains only digits {2,7,9}.
A053932
Numbers k such that k^2 contains only digits {2,7,9}.
Terms
- a(0) =3a(1) =27a(2) =173a(3) =527a(4) =5223a(5) =85013527a(6) =2824499473a(7) =5271838173a(8) =14907304327
External references
- oeis: A053932