a(n) = Sum_{i=0..n} digsum_9(i)^4, where digsum_9(i) = A053830(i).

Terms

a(0) =0a(1) =1a(2) =17a(3) =98a(4) =354a(5) =979a(6) =2275a(7) =4676a(8) =8772a(9) =8773a(10) =8789a(11) =8870a(12) =9126a(13) =9751a(14) =11047a(15) =13448a(16) =17544a(17) =24105a(18) =24121a(19) =24202a(20) =24458a(21) =25083a(22) =26379a(23) =28780a(24) =32876a(25) =39437a(26) =49437a(27) =49518a(28) =49774a(29) =50399