a(n) = Sum_{i=0..n} digsum_4(i)^4, where digsum_4(i) = A053737(i).

Terms

a(0) =0a(1) =1a(2) =17a(3) =98a(4) =99a(5) =115a(6) =196a(7) =452a(8) =468a(9) =549a(10) =805a(11) =1430a(12) =1511a(13) =1767a(14) =2392a(15) =3688a(16) =3689a(17) =3705a(18) =3786a(19) =4042a(20) =4058a(21) =4139a(22) =4395a(23) =5020a(24) =5101a(25) =5357a(26) =5982a(27) =7278a(28) =7534a(29) =8159