Numbers k such that k and k^2 use only the digits 2, 4, 6 and 9.
A137105
Numbers k such that k and k^2 use only the digits 2, 4, 6 and 9.
Terms
- a(0) =2a(1) =264a(2) =964a(3) =494262a(4) =494462a(5) =4946662a(6) =4996962a(7) =49944662a(8) =499466662a(9) =49994666662a(10) =49999296962a(11) =499999296962
External references
- oeis: A137105