a(n) = 10n+12^n.

Terms

a(0) =22a(1) =164a(2) =1758a(3) =20776a(4) =248882a(5) =2986044a(6) =35831878a(7) =429981776a(8) =5159780442a(9) =61917364324a(10) =743008370798