a(1) = 1, a(n+1) is the smallest odd multiple of a(n) (other than a(n) itself) in which the digits are alternately even and odd.
A078226
a(1) = 1, a(n+1) is the smallest odd multiple of a(n) (other than a(n) itself) in which the digits are alternately even and odd.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =27a(4) =81a(5) =567a(6) =8505a(7) =76545a(8) =9874305a(9) =6763898925
External references
- oeis: A078226