a(n) = (largest digit of n)^(smallest digit of n) + n.

Terms

a(0) =1a(1) =2a(2) =6a(3) =30a(4) =260a(5) =3130a(6) =46662a(7) =823550a(8) =16777224a(9) =387420498a(10) =11a(11) =12a(12) =14a(13) =16a(14) =18a(15) =20a(16) =22a(17) =24a(18) =26a(19) =28a(20) =21a(21) =23a(22) =26a(23) =32a(24) =40a(25) =50a(26) =62a(27) =76a(28) =92a(29) =110