Primes which can be expressed as sum of distinct powers of 4.

Terms

a(0) =5a(1) =17a(2) =257a(3) =277a(4) =337a(5) =1093a(6) =1109a(7) =1297a(8) =1301a(9) =1361a(10) =4177a(11) =4357a(12) =4373a(13) =4421a(14) =5189a(15) =5381a(16) =5393a(17) =5441a(18) =16453a(19) =16657a(20) =16661a(21) =17477a(22) =17489a(23) =17669a(24) =17681a(25) =17729a(26) =17749a(27) =20549a(28) =20753a(29) =21521