(Sum of digits of n)^4 - (sum of digits of n^4).

Terms

a(0) =0a(1) =0a(2) =9a(3) =72a(4) =243a(5) =612a(6) =1278a(7) =2394a(8) =4077a(9) =6543a(10) =0a(11) =0a(12) =63a(13) =234a(14) =603a(15) =1278a(16) =2376a(17) =4077a(18) =6534a(19) =9990a(20) =9a(21) =54a(22) =234a(23) =594a(24) =1269a(25) =2376a(26) =4059a(27) =6543a(28) =9972a(29) =14616