a(n) = (sum of digits of n)^4 - (sum of digits^4 of n).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =0a(10) =0a(11) =14a(12) =64a(13) =174a(14) =368a(15) =670a(16) =1104a(17) =1694a(18) =2464a(19) =3438a(20) =0a(21) =64a(22) =224a(23) =528a(24) =1024a(25) =1760a(26) =2784a(27) =4144a(28) =5888a(29) =8064