Numbers k such that k and k^2 use only the digits 2, 3, 4 and 9.
A137078
Numbers k such that k and k^2 use only the digits 2, 3, 4 and 9.
Terms
- a(0) =2a(1) =3a(2) =4943a(3) =499423a(4) =49993443a(5) =4999932923
External references
- oeis: A137078
A137078
Numbers k such that k and k^2 use only the digits 2, 3, 4 and 9.