a(n) = Sum_{i=0..n} digsum_6(i)^4, where digsum_6(i) = A053827(i).

Terms

a(0) =0a(1) =1a(2) =17a(3) =98a(4) =354a(5) =979a(6) =980a(7) =996a(8) =1077a(9) =1333a(10) =1958a(11) =3254a(12) =3270a(13) =3351a(14) =3607a(15) =4232a(16) =5528a(17) =7929a(18) =8010a(19) =8266a(20) =8891a(21) =10187a(22) =12588a(23) =16684a(24) =16940a(25) =17565a(26) =18861a(27) =21262a(28) =25358a(29) =31919