Sum of n-th powers of digits of n.

Terms

a(0) =1a(1) =1a(2) =4a(3) =27a(4) =256a(5) =3125a(6) =46656a(7) =823543a(8) =16777216a(9) =387420489a(10) =1a(11) =2a(12) =4097a(13) =1594324a(14) =268435457a(15) =30517578126a(20) =1048576a(21) =2097153a(22) =8388608a(23) =94151567435