a(n) = 8*(10^(2n+1)-1)/9 - 5*10^n.A332183a(n) = 8*(10^(2n+1)-1)/9 - 5*10^n.Terms a(0) =3a(1) =838a(2) =88388a(3) =8883888a(4) =888838888a(5) =88888388888External referencesoeis: A332183