Numbers whose base-4 representation contains exactly two 1's and four 2's.

Terms

a(0) =1450a(1) =1642a(2) =1690a(3) =1702a(4) =1705a(5) =2410a(6) =2458a(7) =2470a(8) =2473a(9) =2650a(10) =2662a(11) =2665a(12) =2710a(13) =2713a(14) =2725a(15) =4522a(16) =4714a(17) =4762a(18) =4774a(19) =4777a(20) =5290a(21) =5674a(22) =5770a(23) =5794a(24) =5800a(25) =5803a(26) =5806a(27) =5818a(28) =5866a(29) =6058