Numbers k such that k^2 contains only digits {4,7,8}.
A053962
Numbers k such that k^2 contains only digits {4,7,8}.
Terms
- a(0) =2a(1) =22a(2) =28a(3) =88a(4) =86478a(5) =94227622
External references
- oeis: A053962
A053962
Numbers k such that k^2 contains only digits {4,7,8}.