Sums of 4 distinct powers of 4.

Terms

a(0) =85a(1) =277a(2) =325a(3) =337a(4) =340a(5) =1045a(6) =1093a(7) =1105a(8) =1108a(9) =1285a(10) =1297a(11) =1300a(12) =1345a(13) =1348a(14) =1360a(15) =4117a(16) =4165a(17) =4177a(18) =4180a(19) =4357a(20) =4369a(21) =4372a(22) =4417a(23) =4420a(24) =4432a(25) =5125a(26) =5137a(27) =5140a(28) =5185a(29) =5188