Numbers k such that k and k^2 use only the digits 2, 3, 5 and 9.
A137087
Numbers k such that k and k^2 use only the digits 2, 3, 5 and 9.
Terms
- a(0) =3a(1) =5a(2) =23a(3) =235a(4) =23522235
External references
- oeis: A137087
A137087
Numbers k such that k and k^2 use only the digits 2, 3, 5 and 9.