Sum of fourth powers of unitary divisors.

Terms

a(0) =1a(1) =17a(2) =82a(3) =257a(4) =626a(5) =1394a(6) =2402a(7) =4097a(8) =6562a(9) =10642a(10) =14642a(11) =21074a(12) =28562a(13) =40834a(14) =51332a(15) =65537a(16) =83522a(17) =111554a(18) =130322a(19) =160882a(20) =196964a(21) =248914a(22) =279842a(23) =335954a(24) =390626a(25) =485554a(26) =531442a(27) =617314a(28) =707282a(29) =872644