Numbers k such that k and k^2 use only the digits 1, 3, 8 and 9.
A137044
Numbers k such that k and k^2 use only the digits 1, 3, 8 and 9.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =1998333891
External references
- oeis: A137044
A137044
Numbers k such that k and k^2 use only the digits 1, 3, 8 and 9.