a(n) = a(n-1) + sum of decimal digits of n^n.

Terms

a(0) =1a(1) =5a(2) =14a(3) =27a(4) =38a(5) =65a(6) =90a(7) =127a(8) =172a(9) =173a(10) =214a(11) =268a(12) =326a(13) =378a(14) =477a(15) =565a(16) =663a(17) =771a(18) =898a(19) =929a(20) =1046a(21) =1194a(22) =1340a(23) =1493a(24) =1644a(25) =1798a(26) =1987a(27) =2150a(28) =2317a(29) =2380