Numbers k such that k and k^2 use only the digits 3, 5, 7, 8 and 9.
A137136
Numbers k such that k and k^2 use only the digits 3, 5, 7, 8 and 9.
Terms
- a(0) =3a(1) =583a(2) =59833a(3) =93583a(4) =5775583a(5) =5998333a(6) =8875583a(7) =85899583a(8) =93593583a(9) =599983333a(10) =59999833333a(11) =85958937833a(12) =93795393583a(13) =893755758333a(14) =977738899583a(15) =987795393583
External references
- oeis: A137136