Numbers whose maximal base-4 run length is 4.

Terms

a(0) =85a(1) =170a(2) =255a(3) =256a(4) =340a(5) =342a(6) =343a(7) =426a(8) =511a(9) =512a(10) =597a(11) =680a(12) =681a(13) =683a(14) =767a(15) =768a(16) =853a(17) =938a(18) =1020a(19) =1021a(20) =1022a(21) =1025a(22) =1026a(23) =1027a(24) =1109a(25) =1194a(26) =1279a(27) =1280a(28) =1360a(29) =1361