Sum of 4th powers of proper divisors of n.

Terms

a(0) =0a(1) =1a(2) =1a(3) =17a(4) =1a(5) =98a(6) =1a(7) =273a(8) =82a(9) =642a(10) =1a(11) =1650a(12) =1a(13) =2418a(14) =707a(15) =4369a(16) =1a(17) =7955a(18) =1a(19) =10898a(20) =2483a(21) =14658a(22) =1a(23) =26482a(24) =626a(25) =28578a(26) =6643a(27) =41090a(28) =1a(29) =62644