Numbers k such that k and k^2 use only the digits 1, 2, 3 and 6.
A136978
Numbers k such that k and k^2 use only the digits 1, 2, 3 and 6.
Terms
- a(0) =1a(1) =6a(2) =11a(3) =111a(4) =36361a(5) =3636361a(6) =33336363361
External references
- oeis: A136978