a(n) = Sum_{i=0..n} digsum_8(i)^4, where digsum_8(i) = A053829(i).

Terms

a(0) =0a(1) =1a(2) =17a(3) =98a(4) =354a(5) =979a(6) =2275a(7) =4676a(8) =4677a(9) =4693a(10) =4774a(11) =5030a(12) =5655a(13) =6951a(14) =9352a(15) =13448a(16) =13464a(17) =13545a(18) =13801a(19) =14426a(20) =15722a(21) =18123a(22) =22219a(23) =28780a(24) =28861a(25) =29117a(26) =29742a(27) =31038a(28) =33439a(29) =37535