Sum of the elements in the coprime subsets of the integers 1 to n.

Terms

a(0) =0a(1) =1a(2) =6a(3) =24a(4) =48a(5) =156a(6) =192a(7) =580a(8) =836a(9) =1444a(10) =1660a(11) =4596a(12) =4980a(13) =13184a(14) =14768a(15) =17308a(16) =21756a(17) =55888a(18) =58768a(19) =146416a(20) =157552a(21) =181008a(22) =196304a(23) =481664a(24) =500096a(25) =765648a(26) =825152a(27) =1073920a(28) =1148288a(29) =2745728