Numbers k such that k and k^2 use only the digits 2, 3, 6 and 9.
A137091
Numbers k such that k and k^2 use only the digits 2, 3, 6 and 9.
Terms
- a(0) =3a(1) =6a(2) =63a(3) =9996963
External references
- oeis: A137091
A137091
Numbers k such that k and k^2 use only the digits 2, 3, 6 and 9.