Numbers whose base-4 representation contains exactly four 0's and no 3's.

Terms

a(0) =256a(1) =512a(2) =1025a(3) =1026a(4) =1028a(5) =1032a(6) =1040a(7) =1056a(8) =1088a(9) =1152a(10) =1280a(11) =1536a(12) =2049a(13) =2050a(14) =2052a(15) =2056a(16) =2064a(17) =2080a(18) =2112a(19) =2176a(20) =2304a(21) =2560a(22) =4101a(23) =4102a(24) =4105a(25) =4106a(26) =4113a(27) =4114a(28) =4116a(29) =4120