Numbers k such that k and k^2 use only the digits 1, 4, 6 and 8.
A137054
Numbers k such that k and k^2 use only the digits 1, 4, 6 and 8.
Terms
- a(0) =1a(1) =4a(2) =8a(3) =41a(4) =6441a(5) =68444641
External references
- oeis: A137054
A137054
Numbers k such that k and k^2 use only the digits 1, 4, 6 and 8.